C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

digital dash fixed while battery died

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Old Jan 4, 2013 | 08:29 PM
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Default digital dash fixed while battery died

hi guys Well We have become used to our digital dash 85 c4 not working . Won't light up.
Today we took it out 1st time since 2 weeks ago our battery was only at 9.4 volts but tryinbg to start wouldn't catch not enough volts however the digital insruments were lighting up.
now new reman battery thanks to earls battery in fraser michigan $39 but once more no dash lights only as battery was dying they lit up sos Lucky
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Old Jan 5, 2013 | 05:21 PM
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Anyone please sos
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Old Jan 5, 2013 | 07:05 PM
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There is a common spot where the ground on the cuircut board becomes un-soldered. Take out the cluster, and take the back off. In the upper right hand corner youll see about 8 (not positive) terminals in a row. Inspect them for cracks, and burns in the solder, and re-solder if needed. The ground in question is the 1st one on the left, of the row of 8, but check them all. My dash was completely gone, and I re-soldered 3 of these terminals. Now everything works ecept the tach cause of the broken LCD. Hope this helps. h
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Old Jan 5, 2013 | 07:48 PM
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Originally Posted by hemivett
There is a common spot where the ground on the cuircut board becomes un-soldered. Take out the cluster, and take the back off. In the upper right hand corner youll see about 8 (not positive) terminals in a row. Inspect them for cracks, and burns in the solder, and re-solder if needed. The ground in question is the 1st one on the left, of the row of 8, but check them all. My dash was completely gone, and I re-soldered 3 of these terminals. Now everything works ecept the tach cause of the broken LCD. Hope this helps. h
There is a guy on ebay selling replacement LCD's . I bought all 3 and replaced a couple of years ago. It's easy and like having a new cluster.

http://www.ebay.com/itm/85-89-CORVET...item4164f288df
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Old Jan 5, 2013 | 09:41 PM
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hi Hemivet and tbs ok but why when battery or charging on my dash said 9,4 volts they were lighting up like no problem. we have only 4 bolts to take out but worried 27 years old if it will come out easely Lucky and Tatiana Frusciano
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Old Jan 5, 2013 | 10:00 PM
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hi hemivet re reading would we looking correct like you say or reverse? Because if out would have to turn around ? correct? PS LOVE THE LITTLE RED CORVETTE EVEN IF THAT song was probably out in 80 so c3 wanted one of them more but we like ours anyhow. and tbs yes my wife saw that link but afraid to enter anything here Ilike that she's shy and all mine LUCKY SHE WROTE THIS DOWN BUT LIKE iSAID READING CORRCT IF OUT?
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Old Jan 5, 2013 | 10:21 PM
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Originally Posted by frusciano
hi hemivet re reading would we looking correct like you say or reverse? Because if out would have to turn around ? correct? PS LOVE THE LITTLE RED CORVETTE EVEN IF THAT song was probably out in 80 so c3 wanted one of them more but we like ours anyhow. and tbs yes my wife saw that link but afraid to enter anything here Ilike that she's shy and all mine LUCKY SHE WROTE THIS DOWN BUT LIKE iSAID READING CORRCT IF OUT?
If you have it laying face down on a table, and you take the back off its in the upper right corner. I will see if I can find a pic. h
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Old Jan 5, 2013 | 10:24 PM
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hi hemivet Thanks Lucky have a nice rest of weekend.
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Old Jan 5, 2013 | 10:28 PM
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Heres a nice write-up on how to repair your cluster. h

http://www.batee.com/corvette/dcrg/r...tor/repair.htm

Last edited by hemivett; Jan 5, 2013 at 10:34 PM.
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Old Jan 5, 2013 | 10:45 PM
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Really sorry, after reading again, it looks like its in the lower right. Its the white connector that holds the 2 circuit boards together. h
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Old Jan 6, 2013 | 10:43 AM
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hi hemivett. Thanks for the link. about 50% think we could do it. but the other 50% scarred . We LIVE SOMWHAT NEAR Specmo might take it there. but we have to take it out to give them hmmm? seems getting it out is 50%
Still stumped why they lighted up when battery was not strong enough to start our 85 . Anyhow thanks for all Your knowledge Lucky
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Old Jan 6, 2013 | 02:59 PM
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Dont be afraid, its pretty simple, and if you cant fix it then you can take it in. One of the biggest things is how you solder. What you want to do is, heat the terminal til you see the solder melt, then hit it with new. You only have to take off the first circuit board to do this fix. (If all the LCDs are working) After you get the screws out, carefully pry it apart. What will be holding is the white connector, with the pins going through it, with a little effort they just pull apart, no locks, or anything. h
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