bobl@teklds.UUCP (Bob Lewis) (01/14/84)
I'm not sure what I did, but my C64 refuses to power up. When I turn on the power switch, the LED fails to come on and I detect only a slight change in the appearance of the TV I'm using as a monitor. I've checked both power and RF connections (and unplugged everything else). The internal fuse looks good, and, in any case, this used to be an intermittent problem. I'm getting neither video nor audio (checking the latter with a game cartridge). Has this happened to anyone else? Suggestions of other things to try would be appreciated. In lieu of (or in addition to) those, recommendations and/or flames about C64 repair places in the Portland (OR) area would also be welcomed. Thanks. - Bob Lewis ...!tektronix!teklds!bobl
porter@inuxd.UUCP (J Porter) (02/06/84)
+ Sounds like the five volt regulator in the power supply mid-cord has over-heated and hence shut down. I know of two other machines of medium age that have shown this problem. Get a LM309K five volt regulator in a TO3 package and perform surjury on your power supply. The regulator that is in there presently is not a TO3 - it is something not commonly available. It would probably do you good to try your machine with a friend's power supply on your 64. Also, are you sure you have plugged in the power supply with the proper orientation into the 64? Some people I know have fried a ROM or two by doing this. Jeff Porter (inuxd!porter) AT&T Consumer Products Indianapolis
ejk47@ihuxn.UUCP (Ed Kufeldt, ihuxn ejk47) (02/06/84)
As a suggestion, the only problem this could be is the
power is not up. Check the fuse with a meter. If the
fuse is OK, then check the transformer for output. If
both of those are OK, then the power supply is at fault.
This could be a bad regulator or a short on the supply
output somewhere.
Ed Kufeldt
ihuxn!ejk47
P.S. I hope you have also checked the outlet that the
C64 is plugged into. My past experience tells me, this
problem is probably a bad fuse. I blew a fuse with a bad
cartridge. Keep smiling and hang in there. :~}hamaoui@nybcb.UUCP (hamaoui) (02/07/84)
This message is empty.