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Author Topic: A4000 with Video Toaster 4000 - Multiple Problems  (Read 4901 times)

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Offline SACC-guy

Re: A4000 with Video Toaster 4000 - Multiple Problems
« on: April 10, 2013, 08:19:03 PM »
The 4000 battery acid ate the traces for the memory. forgive the pun the 4000 is toast!
The toaster requires at least 8 megs of fast memory and 1 meg of chip mem (two is better)
 

Offline SACC-guy

Re: A4000 with Video Toaster 4000 - Multiple Problems
« Reply #1 on: April 11, 2013, 06:37:59 PM »
Quote from: DirectorSG;731767
I ran the memory tests, and it looks like it might be fried RAM sockets as suspected, but the chip RAM socket is OK... I put each SIMM individually in each of the four sockets and got "0 other mem" on all of them. Sometimes I had to keep reseating them, or else I'd get a purple screen or a yellow screen.

I don't have a lot of experience with Multimeters, although I do have one. I usually use it to test batteries. I'm not even sure where to put the positive lead and what proper voltages would be.

Given the prices of accelerators, it might just be cheaper to get another A2000/3000/4000 to use the Toaster and the Personal TBCs...how much can I expect to sell an A4000 with fried RAM sockets?
@dirSG
Even though the amiga boots, without fast memory...it's very limited
and while the accelerator fix is tempting...
The battery acid will keep eating at the traces
STOP the acid burn first.
I have seen only one 4000 motherboard fixed by a hard core DIY type.
If you are not that hard core the motherboard will die.
Just my two sense.
 

Offline SACC-guy

Re: A4000 with Video Toaster 4000 - Multiple Problems
« Reply #2 on: April 24, 2013, 04:49:26 AM »
Quote from: DirectorSG;732751
I haven't disassembled the 4000 that far. I would only take the motherboard out of the case if it were necessary for a repair.
@dirSG
From the pics, there's battery stains across to u911 and back past the caps
From what I see, this is a major repair in the making. That green stuff is all bad.