Sean 🤷♂️
🤷♀️
🤷
@seanwbruno@infosec.exchange
I thought so. The fact that I couldn’t get this thing to post to the diag cart made me very suspicious. That’s 2 dead Mitsubishi chips in one #C64. U22 and U12. Once I get some cleanup and sockets installed, we’ll see if this thing lives.
Sean 🤷♂️🤷♀️🤷@seanwbruno@infosec.exchange
Finished the first pass of cleanup of the through hole connectors this morning. A little bit of fine tuning is still required on the ram sockets to get the new sockets installed on this #c64.
Once I get the second pass of cleanup done and can cleanly seat the sockets, I'll need to go through the traces to check for connectivity and breaks before I go on to solder in the sockets.
My process for the board was to add fresh solder to each and every pin, then use the desolder tool to clear the bulk of the solder, soften the remaining solder around each chip with a heat gun at 310C and lift each chip out one at a time.
This seemed to work great and I don't see any damage to the the through hole points. Some amount of solder mask has detached that I will have to repair and seal before I get too crazy.
I did verify that the VICII in this NTSC unit was toast, so it will probably get a FPGA replacement at some point or I may finally do the PAL swap that I thought I could do but haven't tried yet.
I'm hopeful that this SID chip is good however. I'll test it at some point this week.
#retrocomputing