joeycuda
Well-known member
I hope someone can point me in the direction to get it working. I bought a Bubbles project, complete with all original boards in it, but dead.
First thing was, the p/s didn't have all of the voltages. I did the Bob kit (except for the heat sink transistor and 2 ICs) on it and replaced the 4 headers on the p/s, and replaced the corresponding IDC with molex housings and trifurcon crimp pins. Still (LED 2 I think?) out, so I replaced the big BR, adding a heatsink, then replaced that heat sink mounted T03 transistor and the 2 replacement ICs. Noticed that the connector from the big heat sink was BURNED, so I replaced that connector as well.
All voltages check out. Well, at the p/s, it's 4.95 volts, -5 and 12 are about bang on.
At the ROM and RAM board, I measure about 4.93 volts.
Still dead with no action on the error display on the ROM board. I removed the ROM board and can see where someone touched up the solder joints. The boards though are very clean.
What should I check next? I hoped it was a p/s and connector issue entirely, but not this time..
Thanks for reading through this and for any advice...
First thing was, the p/s didn't have all of the voltages. I did the Bob kit (except for the heat sink transistor and 2 ICs) on it and replaced the 4 headers on the p/s, and replaced the corresponding IDC with molex housings and trifurcon crimp pins. Still (LED 2 I think?) out, so I replaced the big BR, adding a heatsink, then replaced that heat sink mounted T03 transistor and the 2 replacement ICs. Noticed that the connector from the big heat sink was BURNED, so I replaced that connector as well.
All voltages check out. Well, at the p/s, it's 4.95 volts, -5 and 12 are about bang on.
At the ROM and RAM board, I measure about 4.93 volts.
Still dead with no action on the error display on the ROM board. I removed the ROM board and can see where someone touched up the solder joints. The boards though are very clean.
What should I check next? I hoped it was a p/s and connector issue entirely, but not this time..
Thanks for reading through this and for any advice...

