Socket 7 motherboard repair - endless faults!
Автор: Tony359 | Tony's Tinkering Shop
Загружено: 2022-10-11
Просмотров: 55977
Trying to revive a pretty uncommon Socket 7 motherboard: it's an ASK ATX55C for which I seriously struggled to find any info at all!
RetroWeb entry (which I helped updating) is here: https://theretroweb.com/motherboards/...
As mentioned in the video, please take a look at Necroware's channel here: @necro_ware
00:00 Introduction
01:12 Overview
03:25 Jumper configuration
07:08 First power up
07:35 Troubleshooting
09:58 Fault 1
13:00 Fault 2
15:53 Fault 3
20:10 Fault 4
20:38 Alternative memory/Fault 5
26:21 External 3.3V test
27:00 Fault 6
30:10 Cache removal
31:43 Keyboard controller replacement
31:50 It lives!
34:00 3.3V troubleshooting
37:53 Conclusion
For the records, the allegedly faulty cache chips are labelled
"PB CACHE SS80L6432Q-75 B85111AAB9725"
The tag chip is "UM61256FS-15"
The grinding tool I’m using was recommended by @necro_ware but the exact one I got is not available anymore.
This one looks identical but cannot guarantee it’s going to be the same.
https://www.aliexpress.com/item/10050...
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