Sent from an iPhone, don't ask whose.
On Mar 4, 2013, at 4:01 AM, Haemogoblin <[email protected]> wrote: > > Well after a lot of messing around, looks like my Plus might be working for a > little longer. > > I replaced the C1 capacitor with a new one from digikey, the machine worked > for a day and then something went in the back and it was dead. I tested > everything i could think of and finally replaced the Q3 horizontal power > transistor. The Plus now seem's to be working ok. Which is a little odd, as > after doing the repair. I tested the old BU406 transistor and discovered it > wasn't faulty. > > No idea what is going on, but things seem to be ok. As I recall, when my Plus had the faulty cap I first held the new cap in place, connecting the leads with just pressure, to test if that was the problem. It may have been that there was simply a bad solder joint on that transistor. Replacing the cap may have jostled the solder joint enough to return it to working order, briefly. One thing to keep in mind when repairing circuitry like this is that the failure of one part may damage (partially or fully) another part. -- -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
