Troubleshooting loss of signal -- Pianocorder Forum

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Subject: Troubleshooting loss of signal

Author:
Tom Lear

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Date Posted: 20:18:03 03/23/04 Tue

High resistance in the record/play switch can interfere with tape deck signal to playback board.

Using a tape or cassette adapter, the signal passes thru the record/ play switch located on the PC board in the tape deck.

When the Pianocorder is in the play position only and record position is never engaged, the switch just sits in one position all the time and doesn't get cleaned by the rubbing action that would normally occur when engaging record. The fix is to push down the record switch a 1/2 dozen times to clean the contacts. (Place a blank tape in the deck and depress and release the record button a 1/2 dozen times.) Normally that should fix the problem. In a more severe case, it would require opening the tape deck to get to the switch (on the PC board) and treating it with contact cleaner.

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