Instrument Cluster Power Supply Question
Thread Starter
2nd Gear
Joined: Mar 2010
Posts: 2
Likes: 0
From: struthers ohio
Instrument Cluster Power Supply Question
Does anyone know where to purchase the Delphi power supplies for a 1988 corvette instrument cluster. Sometimes the cluster will work and sometimes it will not. I notice the voltage on the cluster will either drop below 8volts or go above 18volts and then the cluster will turn off. I checked the actual car voltage when it does this, but its stays at 14.4volts. I am assuming the power supply is bad. I would like to fix this myself, but I cannot find the power supplies anywhere!! Help would be appreciated. Thanks!
Le Mans Master
Joined: Jul 2007
Posts: 5,356
Likes: 2
From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
When I had trouble with mine I did a lot of research and found out that the PS manufacturer only sells to a few rebuilders. I bit the bullet and sent mine out and even told them it was a PS problem. I was right but the charge was about $300.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
www.batee.com has the schematic for an 89 cluster including the power supply. If you can repair electronic circuits, the schematic is a a tremendous help.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Usually the LCD panels will show a "flicker" slightly when the cluster tries to perform normally with a failing PS. If this is the cases the more than likely a few of the capacitors blew - more common on the clusters equipped with the stand off power supply (pre 89 - the '89 is integrated into one of the main PCB cards). The power supply runs just about everything in the cluster except for the backlighting.
Advanced
Joined: Aug 2009
Posts: 99
Likes: 3
From: Brampton ON
I've got the same problem... even changed the transistor, and it just started burning when i plugged it in. i'm about to bite the bullet as well and send out for a rebuild. I once saw a PS board on ebay for about $150, but at that price even, you may as well spend the extra and send for a sure fix. My '88 board is also having problems, before i changed the transistor I was burning the 5amp fuse everytime, atleast now, that problem is solved..
Racer
Joined: Sep 2008
Posts: 456
Likes: 0
From: FL
solder cracks and problem begin. I have repaired a few clusters, it takes about 10-15 min.
Get a magnifying glass and look at each weld spot, you can see cracks. Good luck!
Or you can send it to me, include $300...
No, I need $300.01 because I will use solder for 1 cent.
Get a magnifying glass and look at each weld spot, you can see cracks. Good luck!
Or you can send it to me, include $300...
No, I need $300.01 because I will use solder for 1 cent.
