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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Markus_Bieler on October 07, 2003, 09:07:46 PM

Title: A500 powerled flashes
Post by: 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.

Title: Re: A500 powerled flashes
Post by: Linchpin on October 07, 2003, 09:30:04 PM

Have you tried reseating the kickstart ROM?

Title: Re: A500 powerled flashes
Post by: SilvrDrgn on October 07, 2003, 09:31:04 PM

Reseat all of the chips for that matter.

Title: Re: A500 powerled flashes
Post by: Linchpin on October 07, 2003, 09:34:02 PM

I had a simular problem with an old kick1.3 rom, turns out it was fried due to being put in the wrong way... oops

be careful!

Reseating will proberbly help.

Title: Re: A500 powerled flashes
Post by: Markus_Bieler on October 07, 2003, 09:43:01 PM

I'll try a new kickrom.

tnx

Title: Re: A500 powerled flashes
Post by: lempkee on October 07, 2003, 09:48:28 PM

i guess u get a red screen aswell ?

reseat the rom's..

cheers

Title: Re: A500 powerled flashes
Post by: Markus_Bieler on October 07, 2003, 09:53:51 PM

no red screen.

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

Markus

Title: Re: A500 powerled flashes
Post by: Markus_Bieler 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.

Title: Re: A500 powerled flashes
Post by: Linchpin on October 07, 2003, 10:06:24 PM

Do you have a ramboard in it?

Title: Re: A500 powerled flashes
Post by: Linchpin on October 07, 2003, 10:09:09 PM

Did you re-sit all or just change the rom?

Title: Re: A500 powerled flashes
Post by: amigamad on October 08, 2003, 12:10:51 AM

I broke an a500 up that did this ages ago but all chips were tested and the only one that did not work was the rom chip so i tried a good 2.04 rom that i had not had that long and it blew the chip that was £24.99 wasted .

 :-?

Title: Re: A500 powerled flashes
Post by: Markus_Bieler 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

Title: Re: A500 powerled flashes
Post by: redrumloa on October 08, 2003, 01:03:14 AM

Ouch touch luck:-( Any visible signs of damage to the mb?

Title: Re: A500 powerled flashes
Post by: Linchpin on October 08, 2003, 09:21:19 AM

ANd i just so happen to know a guy that can sort you out with a NEW ONE :-)

Title: Re: A500 powerled flashes
Post by: Markus_Bieler 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.

Title: Re: A500 powerled flashes
Post by: Linchpin on October 08, 2003, 10:05:00 PM

Worth a go :-)