Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Michele Smith
 
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Default CTC203

One quick question before I dig into it. It powers up, but there is no power
to the filaments. Any ideas? Thanks. Mark.


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Does it have audio ? If so check the coil from the horiz driver
transformer to the base of Horiz output xistor (Bad solder connections


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Art
 
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L14101, remove the coil, clean the glue off the board, clean the pads and
legs of the coil, reinsert and resolder. Glue applied at the factory tends
to contaminate the solder connections.
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Does it have audio ? If so check the coil from the horiz driver
transformer to the base of Horiz output xistor (Bad solder connections




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Phil Bowser
 
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I'd start by resoldering L14401 which links the horiz. drive to the base
of the Horizontal Output transistor Q14401. You may want to desolder it
first and raise it off the board abt. 1/16th or 1/8th inch so the glue
doesn't rip the lead loose again from thermal expansion.


"Michele Smith" wrote in message
...
One quick question before I dig into it. It powers up, but there is no

power
to the filaments. Any ideas? Thanks. Mark.




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