Digital Dash died.

[Adam N.D.J.]

So the dash in my turbo finally died.. so I go to storage and pull out the two spares, shoulda tested em sooner, they are both dead.... so I start looking in to things. I found a transistor on the back of the "Trip computer"/Clock that was a little crispy looking, and had pulled away from the epoxy holding it to the board. It looks like an NEC C2334. In looking around for info on it, I came across a couple threads here with info, although they dead ended, and the latests post months or years old. I remember Turbone was a spearhead for fixing these, and in the last few years I figured he'd have gotten it, but the newest thread that I found talked of him converting dashes. I'm not giving up. I have been over all three dashes I have, comparing every component, every trace, and every connection. Of the 3 all of them have what appear to be back transistors on the back of the clock, and one of them has a "fried" diod on the front of the "Main Board" (the one with the guages on it). I'm going to get a new diode tomarrow. Of the 3, the ones with the "good" diode all power up, emit a high pitch squeal and light all segments on all the guages, except the tens and ones of the speedo, the one with the "fried diode" doesn't do anything at all, not even squeal. I'm going to see if I can find a new diode tomarrow and hopefully replace it this weekend. As for the clocks, I'm not sure what the transistor does, or if it's even bad. I'll try to find some info on the net on how to test a trasistor, if it turns out that they are bad, then I will try and get replacements for them, turns out Radio Shack doesn't have any, internet should be a better prospect. Anyways, if anyone has made any headway on this can I get that info, and if there is a fix, or someone that is fixing these, I have 3 that could use the works. Catch ya Laters. -Adam-

[subiemech85]

ECG 54 NPN-Si AF Power Amp case to-220 fig. T41

 

hopefully the one in the link from digikey will work for you, based on a search and just enough knowledge to be dangerous

please chech and confirm before ordering

 

assuming this is the digidash for gen 2

 

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=2N3442GOS-ND

Edited January 30, 2009 by subiemech85
link

[carfreak85]

In the event that you're talking about the EA81 digi-dashes, let me just say that I've gone down that path. I decided to convert to analog gauges for a couple of reasons.

 

First, the original digi setup is poor to begin with. They are thin, fragile and at this point 25 years old. Second, there are few if any NOS parts floating around and even then, they are still 25 years old. Lastly, when doing my conversion, I didn't make any changes that couldn't be undone. I can reinstall my digi-dash if a fix for the squeal of death because I swapped the dash harness out, pretty plug and play actually just with a lot of disassembly.

 

In any case, I'm interested in fixing any digi setup to put my wagon back to oem.