Hello everyone!
After some years of inactivity I want resurrect my Commodore 64 (my first computer), in 1996 crashed, and so far has been in a box, although some unsuccessful attempts of arrangement.
But this time I really have to repair the large C64 and relive good old times...
The symptoms are:
- The LED light on;
- Black screen;
- Cassette player does not work.
After reading some posts probably the problem is these chips: U27 (74LS08 ), U14 (74LS258 ) or U31 (74LS629 ).
My board is a PCB ASSY No. 250469 / 25311 Rev.3 and I can´t find these chips on board,
Which chips are down, after all?
Thank you for your help!
After some years of inactivity I want resurrect my Commodore 64 (my first computer), in 1996 crashed, and so far has been in a box, although some unsuccessful attempts of arrangement.
But this time I really have to repair the large C64 and relive good old times...
The symptoms are:
- The LED light on;
- Black screen;
- Cassette player does not work.
After reading some posts probably the problem is these chips: U27 (74LS08 ), U14 (74LS258 ) or U31 (74LS629 ).
My board is a PCB ASSY No. 250469 / 25311 Rev.3 and I can´t find these chips on board,
Which chips are down, after all?
Thank you for your help!