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 Post subject: Mcintosh 7020 (CLD-97 clone) powers on but won't play
PostPosted: 04 Nov 2019, 19:58 
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Trying to resurrect my beloved McIntosh 7020...

Currently, here's the issue:

It powers on, all segments of the LCD light up for 1 second or so, then extinguish. No further response to buttons, etc.

HOWEVER, if I disconnect the ribbon cable running between the control Panel and the Main Assembly, then try a powerup, it does something different:

It powers on, the LCD illuminates normally and responds to button presses ON THE DISPLAY, but never, for example, spins a disc, or ejects the tray. It would say "Play" if I hit play, but nothing actually spins up. Pressing "Open" shows Open on display, etc.

Any ideas? I visually inspected all the caps and they look ok. All the fuses I could find tested OK as well.

Thanks for any hints or leads!

 Post subject: Re: Mcintosh 7020 (CLD-97 clone) powers on but won't play
PostPosted: 05 Nov 2019, 01:15 
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It sounds like the power supply is not supplying enough power (just my guess). I would look at the CLD-97 service manual and check voltages.

Visual inspection of the capacitors is helpful when failed capacitors bulge or leak, but capacitors can fail and appear normal.
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