Re: Amplifone problems...... I'm losing my mind....

From: <MKDUD_at_aol.com>
Date: Thu Mar 07 2002 - 22:33:52 EST

In a message dated 3/6/2002 10:52:29 PM Eastern Standard Time,
joe.bachmann@newmail.net writes:

<< All caps are good and all electrolytics have
 been replaced. Square wave off 555 is fine, but not when cennected with the
rest
 of the circuit - It's just a wave form like an audio waveform. >>

This MUST be a square waveform - Check / replace 555 and all associated
components. Make sure your traces from the 555 are goos to the board. Check
continuity to the next component "down the line" from the 555 pins.
A wave form that is not a square can kill BU406D's....
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Received on Thu Mar 7 19:34:21 2002

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