68kMLA Classic Interface
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| Macintosh Quadra 660av death | |
| Posted by: maditgeek on 2021-02-13 18:48:12 Disregard my questions on what I said under mac iivx questions because now I have a new issue my quadra stopped chiming. press power button I hear the speaker pop. nothing. the '040 doesnt get hot anymore(to the touch). and it no longer boots from my 7.5.3 CD anymore-I was trying to get the floppy drive going due to it always spinning the drive motor (not the eject) even with no floppy in it. no amount of cleaning in it was making a change. so I gave up on the floppy drive for the time being and then tried the boot from TV option by doing the command option T+V key and I couldn't get that to work either so then, it just would deal with the no screw posts on the mac video port issue and just go from there (its VERY sensitive have to hold it in right spot) I was going to see if I could possible run a HD diagnostic software and boot from CD to see if the 250MB HD is fixable (if its not that's fine a SCSI2SD is on its way this was for fun) but then, that's when it decided to stop chiming. like I said earlier it turns on I hear PSU fan running the speaker pops. no chime. no video. no death chime just sits there and does nothing. I pulled the RAM sticks to no avail. I'm thinking it probably needs a re-cap job NOW so, my question is there what are the tips or recommended replacement capacitors to use for this mac? should I re-cap the PSU? | |
| Posted by: Byrd on 2021-02-13 20:54:55 I'd do the usual troubleshooting - reset PRAM, check PSU voltages, check motherboard caps for visual inspection of leaking. My experience with the Centris/Quadra 610, 660AV is that they're finicky at the best of times and cap leakage is common. PSU is usually pretty good, but will eventually need a recap but look at the motherboard first. JB | |
| Posted by: maditgeek on 2021-02-14 04:36:05 It has a brand new 3.6v battery. It's capacitor time. I didn't see any obviously leaking when I checked last night | |
| Posted by: maditgeek on 2021-02-14 09:34:01 When I took out the motherboard I saw those 2 troubleing things. I just got done with cleaning the entire motherboard with rubbing alcohol and a toothbrush. These pictures where taken before the cleaning   | |
| Posted by: maditgeek on 2021-02-14 11:07:33 Does anybody have a schematic for this? | |
| Posted by: maditgeek on 2021-02-16 04:28:59 Update. I took it to a ebay repair place they are too give it a ultrasonic cleaning and then will recap the motherboard. I have it sent out so fingers crossed I've never done anything like this before | |
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