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Author Topic: Amiga defect!?  (Read 4171 times)

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Offline Noster

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Re: Amiga defect!?
« on: July 09, 2005, 01:57:32 PM »
Hi,

@selco

If you find the failure, let me know the cause!
I have an A3000T with the same symptoms. I have already tested everything that isn't soldered on the board (e.g. all custom chips, the processor board resp. the onboard processor, the PSU etc.) without effort. The LED doesn't gets bright :-(
I have also changed the 28.xxx MHz oscillator and checked the RESET signals.

I'm currently disassembling an A3000 motherboard to get all IC's that are soldered on the board and will start to change every single IC on the board (but I have an easier job than you because the A3000T isn't soldered in SMD). My current favorite failure source is one of the chips required to access the chip ram.
I think I have enough to do for the next weeks/months, it is quite hard to solder these multilayer boards, an A500 or A2000 is so much easier to solder...

Noster
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