carlsson
Veteran Member
One of my remaining PETs gives me sparkles and smoke. It is the one I previously lifted ROMs and big chips from to verify they all seem OK. I spotted the sparkles come from the diode rectifier (?) bridge in the power supply department, and planned to replace at least the four 1N5402 diodes that make up the bridge. One of them has even visual cracks in the plastic!
However after closer inspection I saw there has been quite a bit of corrasion on the board, and it didn't get any better after I desoldered the old diodes. My question now is if this is salvageable, and if so how do I move on? Are those motherboards just dual layer? I have attached an image to illustrate the damage as it lies right now. Assuming rest of the board might work, it'd be a bit of a shame to dump a PET just due to this issue.
However after closer inspection I saw there has been quite a bit of corrasion on the board, and it didn't get any better after I desoldered the old diodes. My question now is if this is salvageable, and if so how do I move on? Are those motherboards just dual layer? I have attached an image to illustrate the damage as it lies right now. Assuming rest of the board might work, it'd be a bit of a shame to dump a PET just due to this issue.