Bad evenings repairs

A place to discuss general QL issues.
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bagpuss22
Bent Pin Expansion Port
Posts: 82
Joined: Thu Sep 29, 2011 10:57 am
Location: East Sussex, United Kingdom

Re: Bad evenings repairs

Postby bagpuss22 » Wed Oct 11, 2017 12:29 am

@Derek,
You are correct and that is what has happened, 9v on the 5v line. I did not realise CST put the link in.
JUst trying to ascertain what is damaged and what is not. So far 4 x DRAM and a 8049 destroyed, not checked
the 8302 yet. Once I know they are all working then I will move onto the logic......

PS. Forgot and a Minerva ROM damaged.....

@Martin.

They lift the BK side of L5 and then connect a large 2W resistor between that and the 12v supply at IC37 o/p
(IC37 removed)


Getting to be an expensive learning curve. But I will get there..

Russ



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