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. James On Thursday, 21 February 2013 01:16:02 UTC, Haemogoblin wrote: > > Thanks for the info, i'm now following up on something i saw on the 68kmla > forum. That recommends using a panasonic cap such as this one > > > http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=ECW-F2395JB&x=0&y=0&cur=USD > > Fingers crossed it will fix the computer > > James > > On Wednesday, 30 January 2013 18:15:04 UTC, jWs wrote: >> >> >> >> Dylan McDermond wrote: >> >> On Jan 30, 2013, at 3:47 AM, James <[email protected]> wrote: >> >> >> >> Hi there >> >> I replaced the C1 cap with this new one as per instruction of the Macplus >> PDF repair manual that is floating around the net. It says to replace it >> with a 50v or greater capacitor and that it HAS to be non polar. The only >> thing it doesn't mention is the UF rating and i'm not savvy enough to know >> if thats important in this situation or not. >> >> >> Btw can someone please confirm for me that i've replaced C1 with a >> suitable component. I bought a 10uf 50v non polar capacitor to replace >> the possibly defective one at C1. >> >> >> Shouldn't it be 3.9uf? I think the original is 3.9uf. >> >> - Dylan >> >> >> >> It doesn't really matter as long as it's not too small. I used four >> (4) 1uf monolithic ceramic caps in parallel to avoid the whole >> electrolytics category. >> >> - jS >> > -- -- ----- 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.
