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Messenger M175 Schematic?

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Old 05-28-2013, 01:21 PM
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Question Messenger M175 Schematic?

Looking to repair this M175 for a local. Not too familiar with amps. The CBTricks site for the Messenger schematics - states that the schematics are wrong. Doesn't matter that much, as they don't list the M175 model anyway.

On the a/b/c side of the input xformer, there are two diodes that have been burned up and removed by the owner of the amp. Picture below shows a black arrow as to where one of the burned diodes was removed. On the other side of of the a/b/c xformer, the other diode was also burned and removed. Were the original diodes used 1N4001's?

Any info, experience with this amp, repair tips, or usable schematic link is appreciated.
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BASE: Kenwood TS-2000, GAP Titan DX, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.

Last edited by Robb; 05-28-2013 at 05:40 PM.

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