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Schrade | Instrument Cluster grounds / service... | ||
Elite Guru
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Inside work, before we move on with CCM diagnostics...
I do have the occasional LED flicker, and I just serviced grounds for CCM, on back of engine block - they're good to go. Anyone broken down their instrument cluster, to re-seat integral grounds; new di-electric grease, withIN the cluster? Any pics? Already got IC interface greased here... |
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Posted on: 2016/1/11 0:48
Edited by BillH on 2016/7/15 19:58:42 |
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Matatk | Re: Iinstrument Cluster grounds / service... | ||
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Axel might chime in, I know he's done some instrument cluster work.
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Posted on: 2016/1/11 4:24
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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New di-electric grease on bulb connectors:
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Posted on: 2016/1/11 14:48
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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CAREFULLY knife to pry the pin connector from red connector. Alternate one end to the other, A LITTLE AT A TIME!!!
You don't want to break the pin joints or the glass. |
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Posted on: 2016/1/11 14:52
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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As usual, don't have a clue what I'm doing here.
STERILE ENVIRONMENT AS YOU CAN. |
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Posted on: 2016/1/11 14:57
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Clean gasket debris - LCD Glass-to-Polarization Filter, with a vacuum.
Batee dot com told me on the C4 F/B page, to finish cleaning with alcohol. Probably vacuum again after it dries. I think I am NOT going to put alcohol to it, to not scratch it, and to use residual material both surfaces for gasket. |
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Posted on: 2016/1/11 15:01
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Matatk | Re: Iinstrument Cluster grounds / service... | ||
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Looks like some very careful work there, Chuck. To anyone else be careful because the 90-91 LCD panels are obsolete and not made aftermarket!
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Posted on: 2016/1/11 15:12
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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I do pretty meticulous work there Matt, so I should have it cracked within the hour here!!!
Anyway, now we're going to address light diffusion in Instrument Cluster LCD, in the same manner as oil on specimen slight under electron microscope. The specimen slide gets optical oil, to stop light diffusion - to 'conduct' light. So I'm putting Alcohol / silicon mix onto the Polarization Film, where is lays on the glass LCD. The alcohol acts as an anionic surfactant, to liberate bubbles in the Silicone fluid. Ideally, a fluid medium, or a light fiber would help the bulbs carry light to the gauges face too, but I think best I can do is to apply the same film to gauges face... Where's Bryan here? Which pins on back of I/C are for the bulbs? I'm gonna' try to do half of the I/C gauge face with film, one without film, on the bench here for demo.................... |
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Posted on: 2016/1/11 19:13
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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I had bubbles in the silicone, between Polarization Filter to LCD.
Separated, cleaned, and waxed both sides of both filter and glass. |
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Posted on: 2016/1/14 19:01
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Cleaned the bulbs Before n After:
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Posted on: 2016/1/14 19:07
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Silicone I/C Bezel Before n After:
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Posted on: 2016/1/14 19:15
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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DE Grease on needle connectors - 40 pins total!!! :
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Posted on: 2016/1/14 19:17
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Silicone on gauge face front and back to give some light contrast - marginal at best.
Re-assembly (ANOTHER reason to put DE Grease on LCD pins, to facilitate re-insertion): DON'T force the pins, as you probably know. |
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Posted on: 2016/1/14 19:33
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
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All I/C housing screws are identical.
Don't forget 2 screws INSIDE the unit - Yellow Circle. Make sure also that needle extension pins are aligned. DE Grease on INSIDE of 3 locator tabs on rear insulating pad help them slide into slots. Use a small knife to pull them back. |
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Posted on: 2016/1/14 19:42
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Wax on outside of unit clear housing.
Done, ready to go back into dash and CCM field diagnostics. I'm optimistic that the occasional LCD flicker is now history... |
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Posted on: 2016/1/14 19:46
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
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I am absolutely stuck getting I/C back in. No Y/T videos...
I KNEW I should have gone back and forth out and in, when I got it out. Spent :45 getting it out, took a break, tried another orientation, and it came out relatively easily. Just did :30, and here I am take a break. Help? Snappics? Here we go again. |
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Posted on: 2016/1/14 20:51
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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I/C face off makes it much easier...
Still have to push high on the dash frame, right side, and she rolls back into place. |
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Posted on: 2016/1/14 22:05
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Matatk | Re: Iinstrument Cluster grounds / service... | ||
Webmaster
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Great write up, Chuck.
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Posted on: 2016/1/15 2:41
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Thanks there Matt; wish a few others would post up on it - try this, that's not good, f*+^ off ... anything
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Posted on: 2016/1/15 4:38
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hcbph | Re: Iinstrument Cluster grounds / service... | ||
Senior Guru
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Have you looked at Batee.com website for info? He has a lot of info available there was well as parts.
When the cluster went out on my 86 I found the probable cause there. I also figured I might not be up to fixing it myself and sent it to Bryan to repair. He did a great job on it and I'm happy with both the cost, quality and timeliness of his work. |
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Posted on: 2016/1/16 16:37
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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I talked to Bryan on the phone - pretty helpful. Then he asked ME for some tech info (LCD Logic Board schematics) !!!
I got everything zipped up pretty well on the I/C - really DID make a difference lighting. Have not fired it to check for flicker - it was VERY infrequent.................... Quote:
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Posted on: 2016/1/16 16:46
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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re-boot / instant replay on I/C Service:
re: Tach Needle sweep motion not smooth, LCD Segments mileage 10's and 100's digits incomplete display, and LED Flicker (flicker might not be addressed by Bryan @ batee.com) Nano-Surgery : |
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Posted on: 2016/7/15 17:41
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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WOW - DISCOVERED A TRICK THAT MAKES PULLING I/C A CAKEWALK.
Roll the top of I/C back into steering wheel, the I/C top almost covers Airbag, then turn the steering wheel to the right. I/C is free. (probably in FSM that way) |
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Posted on: 2016/7/15 18:30
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Schrade | Re: Iinstrument Cluster grounds / service... | ||
Elite Guru
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Wax on Lens was Yellowed after 3 months [?]; wiped down, ready to pack and send to Bryan...
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Posted on: 2016/7/15 18:43
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BrianCunningham | Re: Instrument Cluster grounds / service... | ||
Senior Guru
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Never had one apart
Some neat stuff there. |
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Posted on: 2016/7/15 20:51
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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GOLDCYLON | Re: Instrument Cluster grounds / service... | ||
Guru Newb
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I've never had one that fully apart Chuck. I was wondering how you did that without dropping the steering wheel
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Posted on: 2016/7/15 23:59
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GOLDCYLON - 91 ZR-1 #2014 380 P&P&PCed,Ported Heads,Jeal headers,/Corsas/FIKSE FM-5s /LED TLs, HID Projectors,/R Baer Eradaspeed Rotors with Wilwood 6 piston front calipers |
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hcbph | Re: Instrument Cluster grounds / service... | ||
Senior Guru
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Can't speak to the newer ones, but on the 86 just pull the tilt lever on the column after moving the steering wheel down as far as it will go and everything comes out without unbolting the column.
Had mine worked on, didn't have the guts to do it myself so sent it to Bryan at Batee.com. Did great work. |
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Posted on: 2016/7/16 11:05
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bogus | Re: Instrument Cluster grounds / service... | ||
Grand Imperial Pooh-Bah
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I need to do the same with mine...
Great write up!!!! |
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Posted on: 2016/7/21 22:10
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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I think I got too much DE Grease in my connections here Andy.
Although Tach Needle was off, according to Tech 1, the sweep motion WAS good. I think I increased resistance with extra grease. Listen closely, you might HEAR Bryan cur$ing, ringing up $ervice charge, cleaning contacts. Only LCD problem 10's and 100's digits could be beyond repair; awaiting verdict here..................... Quote:
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Posted on: 2016/7/21 22:47
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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I think Bryan got hit n run accident; might be a while on I/C verdict...
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Posted on: 2016/7/22 13:50
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BrianCunningham | Re: Instrument Cluster grounds / service... | ||
Senior Guru
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Quote:
Ouch |
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Posted on: 2016/7/22 15:37
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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VERY Informative discussion under Jay Eichenberg's comment - ",
INCLUDES SOME DIAGNOSTICS FOR LCD, WITH POLARIZED SUNGLASSES HOW TO 'SAVE' F/B CONVERSATION??? -------------------------------------------------- Jay Eichenberg Mine are fading in areas, is that a bad LCD? Chuck Buttermore IV George or Bryan would know better, but I bet there's greater hope for 'fading' segments, as opposed to 'gone' segments??? If Bryan can do a video of bench diagnostics, then a coder / programmer might be able to do it himself... Chuck Buttermore IV And I'd SURE like to see MY bad LCD in ANOTHER bad I/Cluster, to see what displayed (or someone ELSE's bad LCD in MY Cluster......................... Jay Eichenberg My stuff is there, just faded, happened with the windows down and sun beating directly on the IC. Chuck Buttermore IV do you want a link to the IC i found on Craigslist? He ships worldwide.... Chuck Buttermore IV Yeah - do that Jay , please, although I think I have a new LCD, IF necessary - waiting for Bryan's verdict... Bryan A Thompson If it's constantly faded in these areas, it's likely the polarizing film. If the weak area moves around, the digital data pins (1-4) are the issue. Chuck Buttermore IV Bryan Polar Film is middle piece? Bryan A Thompson It's the grey transparent stuff that covers the glass panel. It's appplied to both sides, and then the factory graphics are applied over the top to provide turn signal high beam. http://batee.com/.../dcrg/services/9096_lcd_restoration.html BATEE.COM - 84-96 Corvette Digital Cluster Parts and Services batee.com Chuck Buttermore IV And if so, wouldn't wax on that film act like Immersion Oil for microscope, for light conduction, killing diffraction? Chuck Buttermore IV Got it. Is it Phosphate Coating that excites by electrons PHOTONS ! ? For translucency??? Chuck Buttermore IV Can polar filter FADING be determined with Polarized Sunglasses??? Chuck Buttermore IV WTH is George ?????????????????? George Rudolf Mezzomo Nope. LCDs contain, as the name says, crystals suspended in oil, between two layers of glass. When current is applied to a matrix etched into the glass (which makes up the graphics), it causes the crystals to react by organizing themselves in a certain...See More Chuck Buttermore IV So the segments are NOT enclosed in some field, withIN the glass? It's totally a function of the Polarization? George Rudolf Mezzomo The segments are just a conductive patch of glass. If no current reaches them, no change in crystal orientation. If polarizing film is faded, it won't block light properly and affected area will never darken. However, failed polarized has a quite distinct aspect to it, and in the worst cases, a quite noticeable acrid smell Bryan A Thompson It is literal polarizing film. It blocks all light not moving in a single plane. When an electric field is applied to the liquid crystal material, it causes light passing through it to become polarized at a right angle to what it was coming in, or tw...See More Chuck Buttermore IV So if there's 2 polararizing filters, on perpendicular axis, and one is failing, can it be tested with a polarized sunglasses lens??????? Bryan A Thompson If it isn't faded dark brown, and if it isn't the filter the light enters first (the rear film), it can be seen with polarized glasses. We give away remnants of the film to use for testing. It can be used front side or back side with a little more work. Chuck Buttermore IV GOOD info (y) Chuck Buttermore IV Test with Polar Film would be done by rotating 90' ??? Chuck Buttermore IV George "... the way they transmit [OR BLOCK] light..." - or BLOCK - right? Bryan A Thompson Yes, the scraps aren't marked, so you really have to hold the film up to the panel and then rotate it through 180 degrees. If you see the data, it will likely be much weaker than it looks from the factory. This is normal, and it's because the old faded film is still in place. Chuck Buttermore IV Got it. George Rudolf Mezzomo Both, Chuck. They can either transmit or block As a curiosity, I went about finding a dead/cracked LCD here and separated half of it. Glare is to show the oily film with the crystals Chuck Buttermore IV Get testing on video there Bryan ; put it on the bill for service, if you can there........... Bryan A Thompson The plane of polarization on the 90-96 filters are perpendicular to one another. This has the result of passing light when in the "off" state, and blocking light when the segment is on. If you would rather have black background and orange numbers, use two "top" filters or two "bottom" filters. Chuck Buttermore IV That would be cool. But I think my LCD cannot be repaired ? Let me know, I think I've sourced another here... (Daniel) George Rudolf Mezzomo Also as curiosity, the other half of the cracked panel I just showed. Marked in yellow the control circuitry, and you can sorta see the segments (pixels here) etched into the glass George Rudolf Mezzomo's photo. Bryan A Thompson It's too busy in the shop right now, but there are bench test videos on our YouTube channel. https://www.youtube.com/channel/UCNQtlxisD8JtPZC4NlRWohA crazyuncleburton Corvette Electronics parts and Repair. Digital Dashes, Climate Controls, and more. youtube.com Chuck Buttermore IV Can I see anything here that's out of order, in sunlight? Chuck Buttermore IV's photo. Bryan A Thompson We just started our own FB page. https://www.facebook.com/batee.engineering/ batee.com Engineering Automobiles and Parts batee.com Engineering's photo. batee.com Engineering 2 Likes Chuck Buttermore IV Jay - get that? Test yours with some Ray-Bans or Oakleys? |
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Posted on: 2016/7/22 17:27
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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Buyer sent a new Cluster - test, Cleanup, Grounds check, etc.
This one is pretty filthy. Daryll... |
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Posted on: 2016/7/31 16:56
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GOLDCYLON | Re: Instrument Cluster grounds / service... | ||
Guru Newb
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Quote:
It was hanging in a barn. Prob the same as a bone yard pick. Here's hoping. |
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Posted on: 2016/7/31 21:17
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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Took the LCD from this Cluster, and put in the one that Bryan at batee.com serviced.
Now, Bryan has a chip adapter that allows '90, '91 CCM to talk to '92 - '96 LCD. Cleanup, DE Grease on bulb seats, wax lens, pack. Some befores n afters... |
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Posted on: 2016/8/17 15:16
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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more...
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Posted on: 2016/8/17 15:20
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-=Jeff=- | Re: Instrument Cluster grounds / service... | ||
Master Guru
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Quote:
ANy more info? I emailed Bryan as that is not on his website that I could find |
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Posted on: 2016/8/19 14:01
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-=Jeff=- 1990 Corvette ZR-1 #1051 |
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Schrade | Re: Instrument Cluster grounds / service... | ||
Elite Guru
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He's just completed coding to burn this chip Jeff. $99.
Bus. phone is (573) 578-9590. I have his personal cell, PM to you - wait to call it, to make sure he doesn't mind me disclosing it here.. sales@batee.com Quote:
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Posted on: 2016/8/19 17:41
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-=Jeff=- | Re: Instrument Cluster grounds / service... | ||
Master Guru
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yep I emailed him and got a response.
I have a 1992 LCD.. just need to decide when I want to buy the part and try it out |
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Posted on: 2016/8/21 2:30
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-=Jeff=- 1990 Corvette ZR-1 #1051 |
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