My 88 GTA Liquid Crystal Display (I beleive the option was called the digital dash or something like that) Odometer works when car first starts but goes out 3 or so minutes after it is on, it is located above the stereo in the center of the dash. The MPH still works located above the steering wheel. After the odometer quits working it does not respond to any buttons being pushed and when pushing the MPH to KPH it does not change. It appears to be a power supply problem. Anyone got any ideas. I have not opened up the dash yet. I have had the car since new and has been stored over 15 years (since 1991) and now am interested in driving it but would like to resolve this problem.

 

What you describe sounds like a failure in the circuit board that controls the lcd.It's right behind the display and maybe failing when the light bulbs warm it up.It could also be just a bad connection.try gently pushing in on the left upper corner of the display.It will move slightly and may improve your situation.My gta loses segments on the display until i push on that corner.One day i'll take it apart and fix it right.

 

The problem resides on your odometer integrated circuit board. You can either attempt to fix your board /have it fixed by an electronic specialty company or find a replacement. Since these parts are no longer manufactured, you must buy on the specialty secondary market (e-Bay, TGO). Odds are about -zero- that you will be availble to buy just the board - best chance is to buy just the digital dash cluster, use the odometer board and save the other parts for future use. If going the replacement route, be sure to transfer your EEPROM from your current board to the replacement board to save your current odometer mileage reading.

You must be VERY careful when pulling out the old board and disconnect from the multi-pin connector (left-side facing) for the four button display Same goes for seperating the odometer glass display (20 pins?) from the board connector....Good Luck

 

Thanks a bunch. I'm just gonna have to dig in and see whats up..

 

Thanks a bunch. I've done some circuit board work in the past with bad solder joints and the like with TVs and the digital HVAC controls on some of the earlier big bodied Tahoes. Maybe I'll get lucky. Is the circuit board behind the LCD?

 

Thanks a bunch. I've done some circuit board work in the past with bad solder joints and the like with TVs and the digital HVAC controls on some of the earlier big bodied Tahoes. Maybe I'll get lucky. Is the circuit board behind the LCD?

 

If I remember right the lcd plugs directly into the circuit board with about ten straight long pins.so yes it is behind the lcd.