Commodore 64 Repair – 3
C64 – Fault “Dead”
 Really nice clean C64 sent to me with a DEAD fault.. also required JiffyDos upgrade  Humm.. Not so DEAD now is it? Cursor isn’t flashing though 🙁  No flashing cursor generally points to the character rom and in this case it was. As luck would have it, it’s in a socket!  If your capacitors have leaked like this, replace them now before the PCB dissolves like this.  All capacitors replace, heatsinks stuck on.  JiffyDos kernel swap switch installed in video H-L gap. No drill required!
 Commodore test harness proves 6526 has passed on  NOPE!..  Back in it’s box.. Hold on.. Who fitted a blue LED!! Not sure if it’s good or bad?  |
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 It’s nice and clean inside too!  4.76v – PSU only fit for the bin  Unfortunately the SID was also duff.. Bought 4 off an Ebay seller.. Only one worked! Marvellous.. Seller sorted me out though.. replaced them for workers  Both capacitors in the video box have leaked.. Probably due to heat.  All socketed!.. So lucky, JiffyDos installed, switch routed to the H-L video slot.  A wonky PSU can kill.. Under-voltage increases the current drawn by each chip.. Seems to have burnt out the CIA  Another socketed chip! Surely, that’s the last chip..  At last, that’s it.. Check your PSU before it eats your chips! |