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Mcintosh 7020 (CLD-97 clone) powers on but won't play https://forum.lddb.com/viewtopic.php?f=60&t=8731 |
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Author: | jbond [ 04 Nov 2019, 19:58 ] |
Post subject: | Mcintosh 7020 (CLD-97 clone) powers on but won't play |
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! -Jeremy |
Author: | cplusplus [ 05 Nov 2019, 01:15 ] |
Post subject: | Re: Mcintosh 7020 (CLD-97 clone) powers on but won't play |
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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