Author Topic: A500 powerled flashes (Read 3020 times)

Markus_Bieler · « **on:** October 07, 2003, 09:07:46 PM »

My old A500 has a big problem. The powerled flahses 10x short and 1x long then makes a reset and it starts flashing again. Any advise what it could be?

There is no screen, nor the floppy clicks.

Markus_Bieler · « **Reply #1 on:** October 07, 2003, 09:43:01 PM »

I'll try a new kickrom.

tnx

Markus_Bieler · « **Reply #2 on:** October 07, 2003, 09:53:51 PM »

no red screen.

the a500 acts like dead. just the powerleds keeps flashing.

Markus

Markus_Bieler · « **Reply #3 on:** October 07, 2003, 10:01:23 PM »

I replaced the rom (1.3) with an 2.05 rom and guess what. I get a green screen. Chipmem is dead or Agnus fried.

Markus_Bieler · « **Reply #4 on:** October 08, 2003, 12:17:18 AM »

I guess this a500 is broken. Sometimes after several resets with green screen, I get a yellowscreen. Guru before the guru-handler was activated.

I changed all chipos against other ones from old (rev 5.0 board) but no luck.

Markus

Markus_Bieler · « **Reply #5 on:** October 08, 2003, 09:09:36 PM »

I got an advice from the former service technicien of Commodore Switzerland. It cold be the 1488 or 1489 IC being defective. This chips have something to do with the serial port. As they cost nearly nothing I'll change them.

Author Topic: A500 powerled flashes (Read 3020 times)

Markus_Bieler

A500 powerled flashes

Markus_Bieler

Re: A500 powerled flashes

Markus_Bieler

Re: A500 powerled flashes

Markus_Bieler

Re: A500 powerled flashes

Markus_Bieler

Re: A500 powerled flashes

Markus_Bieler

Re: A500 powerled flashes