Daystar Turbo 040 not working - Anyone out there willing to try and fix it?

[jasa1063]

I have a Daystar Turbo 040 33MHz accelerator that is currently not work. When putting into any one of three IIci computers I have, I just get a black screen and nothing else. I have tried swapping out the CPU for a known working one and it has not made any difference. Visual inspection shows no broken traces that I can find. Trying to fix something like this is well beyond my skill set, so I am reaching out to see if anyone out there would be willing to take a look at it and see if it can be repaired? live in the United States, in Minnesota.

 

[Phipli]

You might want to mention where you are in the world

 

[jasa1063]

You might want to mention where you are in the world

I updated my post as to where I live.

Thanks!

 

[Byrd]

I'd be checking that ROM in the socket next, plugged into an EEPROM programmer to see if you can dump anything usable from it. A deep clean in an Ultrasonic cleaner, or equivalent wouldn't also go astray.

 

[jasa1063]

I'd be checking that ROM in the socket next, plugged into an EEPROM programmer to see if you can dump anything usable from it. A deep clean in an Ultrasonic cleaner, or equivalent wouldn't also go astray.

I just got a TL866II programmer, so I will definitely give that a try. I don't have an Ultrasonic cleaner, but I am going to order a 22L unit as I have been meaning to get one anyway. Hopefully that will fix the issues with the Turbo 040. Thanks for you advise!

 

[Unknown_K]

I would check every capacitor and resistor on the back for a short.

 

[jasa1063]

Well, I finally got around to doing more testing and it turns out the Turbo 040 had a bad ROM chip. When I replaced it with a 4.1.1 version it is now working again!