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[MDP-800] Repair https://forum.lddb.com/viewtopic.php?f=56&t=10484 |
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Author: | cplusplus [ 07 Aug 2022, 03:50 ] |
Post subject: | [MDP-800] Repair |
I bought a broken MDP-800 yesterday. The seller said there was no audio. I opened it up and was greeted with the following: Attachment: Attachment: Attachment: Attachment: The following caps were leaking: Servo section: C299, C428, C430 47uF (I have seen these leak in a MDP-600 as well) Audio section: C507 47uF Power section: C707 100uF Power supply: C31 C35 100uF All of these capacitors were 35V. After cleaning up all the leakage and replacing these, there was still no audio. +8VDC to audio section was somewhere around +2VDC. I replaced the +8V regulator in the power supply and was relieved to hear audio. On to the adjustments now (once I find wherever my MDP adjustment cable is hiding). Unless the mechanical adjustments have drifted, it shouldn't take long since the only servo adjustments available are tilt balance for A and B. |
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