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Author Topic: A500 powerled flashes  (Read 3009 times)

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Offline Markus_BielerTopic starter

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A500 powerled flashes
« 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.
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Offline Linchpin

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Re: A500 powerled flashes
« Reply #1 on: October 07, 2003, 09:30:04 PM »
Have you tried reseating the kickstart ROM?
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Offline SilvrDrgn

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Re: A500 powerled flashes
« Reply #2 on: October 07, 2003, 09:31:04 PM »
Reseat all of the chips for that matter.
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Offline Linchpin

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Re: A500 powerled flashes
« Reply #3 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.
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Offline Markus_BielerTopic starter

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Re: A500 powerled flashes
« Reply #4 on: October 07, 2003, 09:43:01 PM »
I'll try a new kickrom.

tnx
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Offline lempkee

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Re: A500 powerled flashes
« Reply #5 on: October 07, 2003, 09:48:28 PM »
i guess u get a red screen aswell ?

reseat the rom's..

cheers
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Offline Markus_BielerTopic starter

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Re: A500 powerled flashes
« Reply #6 on: October 07, 2003, 09:53:51 PM »
no red screen.

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

Markus
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Offline Markus_BielerTopic starter

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Re: A500 powerled flashes
« Reply #7 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.

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Offline Linchpin

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Re: A500 powerled flashes
« Reply #8 on: October 07, 2003, 10:06:24 PM »
Do you have a ramboard in it?
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Offline Linchpin

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Re: A500 powerled flashes
« Reply #9 on: October 07, 2003, 10:09:09 PM »
Did you re-sit all or just change the rom?
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Offline amigamad

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Re: A500 powerled flashes
« Reply #10 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 .

 :-?
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Offline Markus_BielerTopic starter

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Re: A500 powerled flashes
« Reply #11 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
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Offline redrumloa

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Re: A500 powerled flashes
« Reply #12 on: October 08, 2003, 01:03:14 AM »
Ouch touch luck:-( Any visible signs of damage to the mb?
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Offline Linchpin

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Re: A500 powerled flashes
« Reply #13 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 :-)
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Offline Markus_BielerTopic starter

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Re: A500 powerled flashes
« Reply #14 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.
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