Help! Had Power Failure, now A400 won't boot...yellow screen

[marcfrick2112]

Hello, Hope someone could help me....Had a power failure
for about 25min. today. When power came back on, I found my PC
and my Amiga 4000/040 dead. The PC just blew its PSU, I could give a rat's
butt about it  now...

The 4000 won't boot, won't even try to boot a floppy. I can
hear the HD spin up (clicking) but only get a screen flash
then a yellow screen. I know this is CPU exception and/or
hardware failure.... Anyone have this happen? Any ideas what to
check? I need to try to fix this myself, as I don't have the
cash to send it to, say Amiga Center in France. As luck would have
it, I got laid off from work 2 months ago....

Worst part: both the A4000 and IBM had surge supressors....

Any ideas?

Marc

[marcfrick2112]

Thanks everyone,

@countzero: OK, will try to calm down...I'll check the CPU
card, but I can't see how that could be problem, the A4000
was working several hours before the power failure, surely
that couldn't have made the cpu card come loose??

@zombi and countzero: Any idea where this fuse is? In the
PSU maybe? I hope so, the PSU on my IBM-compatible had NO fuse.

[marcfrick2112]

Hi eveyone, thanks for all your advice,...I re-seated all chips,
cables, ROMs, processor board (twice) Still a no-go...

I will have to send it to a repair guy in KS (USA)

Think it may be a mobo problem

Again, thanks everyone...

[marcfrick2112]

@moto: Yeah, I checked the voltages coming from the PSU with a multimeter, everything was fine [shrug]

Regarding ther reapir guy in KS, his name is Ed Jeffries, runs  a place called Video Lab, seems very good (Ibought an A1200 desktop from him couple of years back..) Number is 913-403-0045

[marcfrick2112]

alexh: well, I don't have a spare 30-pin SIMM to try (that I can find)...I have 72-pins coming out of my ears...

Checked the battery, looks fine, and there is no corrosion that I can see....

Well, I haven't sent it off for repair yet, so I'll scrounge for a 30-pin SIMM...does it have to be 2MB to work?
 
Am grateful for all the ideas.
OK, my dad (also big-time Amiga fan) wants to get a spare 4000
The above-mentioned Ed Jeffries has a 4000 with a 40Mhz '040 WarpEngine, SCSI, 2GB HD, and CD-rom for $500.00, supposedly completley refurbished, you guys think I should go for it?

[marcfrick2112]

Hi Everyone, well, I dont have a 2MB SIMM lying around, I may just
have to send it in to be repaired, thanks for everyone's help.

@alexh: The 4000 I am buying is a KS3.1/OS3.1 machine with
a total of 64MB RAM, and comes with Scala InfoChannel, so
I am going for it!