I need help with taxi

jacklegjim

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I bought a taxi that needed a full restoration. It did not work when I got it.I am 98% done
with the restoration and I am to the point trying to get it to work. I already rebuilt the power supply and now i have +94v and -94v on the high volt side the 12v and 5v are right too. None of the displays work . I guess all of them are bad? I am looking for replacements now. The game will come on and go to attract mode and thats it. I got it into diagnostic mode (hard to do with no display) it seams all the sound, lights and solenoids
work in this mode. I am not sure what to check next.
Thanks Jim
 
Entirely possible the glass is bad; look very closely at the display glass on the inside, with a bright light source. If you can see little shiny flecks on the inside around the segments, that's a good indication the displays are out-gassed.

It's otherwise possible that there are some bad chips on the display driver board - but they're not cheap and increasingly hard to acquire.

You note that none of the displays come up - including the jackpot display? It could be bad as well of course, but if you have access to another machine with which to test and that display works in the other machine, that's a quick/easy way to verify you are likely dealing with a display board issue..

If you think the glass is good, it's worth troubleshooting the driver board - if even one of the two glass displays is bad however, I'd suggest going with an LED replacement (I got PinLED ones for my Whirlwind and F-14, and been very happy with them).
 
Just get the pin led displays, they are nice and you probably will be good, but could be the driver is blown and needs some love, I would try to fix by shotgun replacemnt, then buy the new ones...wont be dissapointed...
 
Check R1 & R4 on your power supply. These are the 39K /1 ohm resistors. If these are open you will not have a display.
 
+1 on led displays, when you powersupply gives the correct voltages and displays still don't work..
 
rotten dogs got the best price on them

but i think i had to get mine from mad admusment rotten was out.
 
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