Hi,

Thanks in advance for your help. I played a game of Firepower a few days back (no issues) and today when I went to start up I got GI and that was it. I tried a few of the guides online and removed/reconnected the power lines to the MPU board and executed a sound test.

Here is what is happening:

1. Sound board works when manual test is applied to the board, now when I start up I get the end of game noises.
2. MPU board LED's both light, blink and then light again.
3. I manually ejected all 3 balls and shot them down the playfield, all are stuck as the kicker isn't kicking.
4. Coin door is currently useless, buttons do nothing.
5. I noticed that a small dot appears on the displays (I think all of them?) at start up, but they are blank.

What steps can I do next to try and diagnose the situation? I am an EM guy with a couple of SS's, so my skills in this area are very weak. I'm open to doing anything that's safe and won't harm me or the machine

Thanks pinballlizard. I did try Vid's guide and partially reseated the rom chips. Initial success - I now boot up and have sounds and diagnostics at the coin door. Now working on "I won't take a credit" issue.

Thanks again everyone. I will likely have to work on sockets, but at least I was able to get it working today. I also had the problem with only have the speech working as described here:

http://homepage.ntlworld.com/alienpoker/top/FP-Parts-Snd.html

But I reseated the sound wires from the sound board to the driver board and they came back to life. I was initially thinking to test Q35, but luckily the reseat at least for now handled the problems.