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'Morning all, Currently in the process of repairing a poorly 520STfm. This is a UK 520, and it has found itself in sunny Australia, where the voltage is the same (220-240v). Board is nice and clean, no issues with burst caps or any other visible damage. The main symptom has been no power. I am replacing the PSU caps based on the Techwiki Astec ASP34 (Mine is ASP34-2). After removing all of them, I note most of the PSU caps have leaked at some point, so I have cleaned up the bottom & top of the board. Please see the photos. One of them has explosively decompressed out the side ( C7 ) . A couple of components also look burnt and/or damaged. Could anyone please assist in identifying the components in the pictures so I can replace them? I have pointed to them the best my limited paint skills allow. Thanks in advance all.
Fully tested - Refurbished Mint condition - Minimal yellowing No breaks or cracks to the case Tested with an external floppy drive, monitor, hard drive, printer and RF output TOS v1.02 UK 512Kb Memory Great Britain GEM v0.13 AES v1.20 No modifications to the case. Floppy drive heads cleaned - read/write/format tested Joystick and mouse ports re-soldered 100 pass memory test Internal hardware tested with diagnostics software System run continuously for 48 hours running hardware diagnostic testing software Included:- Atari 520 STFM computer World Class Leaderboard Leaderboard Leaderboard Tournament Disk #1 3D Pool RF / Aerial cable to connect the Atari to a television or monitor with RF input (on request) 13A to IEC power cable or kettle lead (on request) Price: £55.00 P&P UK: £12.50 Europe: £27.00
Hi hoping someone can advise. I have a working stfm with an Xtra ram 4mb upgrade. However, on returning to the machine after a few months it doesn't do anything on power-up. Once I disconnect the xtra ram all is fine and it boots without problems. is it simply a case of faulty ram? or are there specific tests i can carry out to identify the cause of the problem? i'm assuming it could be any of:- ram upgrade module, simms, cables, upgrade connection on mobo any help appreciated