daver2
10k Member
Gary,
You've given me an idea to include in PETTESTER Version 5...
Dave
You've given me an idea to include in PETTESTER Version 5...
Dave
Had a niggle that they aren't being refreshed properly with PETTESTER working so fast that problems with refresh aren't revealed and just noticed that half of UD3 isn't clocking which means the refresh address lines aren't operating !
Gary,
You've given me an idea to include in PETTESTER Version 5...
Dave
Great work!So that was a 6545 CRT controller one DRAM, SRAM, 74S04 a 74LS157 and a 74LS393. Probably all when the mains filter blew when the original owner decided to power it up.
Just noticed, it was last june when I got this machine !
I have seen that exact type of fault before on a VCFED thread...
Dave