[TechAssist] Zenith SC2793P,HV stays ON,Early digital manf:1986

  • From: "Ron Miller" <rlmbkm@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 3 Oct 2002 15:45:48 -0500

SMPS: 9-370-06
Sweep: 9-367-07
Main: 9-535
 Cust wants fixed,came in dead growling noise,replaced caps on SMPS that
read high esr.Set comes on now pix and sound good (bose audio).
 When one tries to turn off sound raster video all goes off but set still is
producing HV,filaments are on.Have replaced the 121-1040 and 121-1145
transistors on SMPS pcb have no print or flowchart can't figure out what
should turn off the 26vdc feeding horiz drive circuit.Am using J2 digital
training manual TP 46 as a guide SMPS is similar to a 9-628.Anyone remember
this dog?Tia

Country TV
Ron Miller
484 FM444 S.
Inez,TX 77968-5002
V.(361)782-6419. F.(361)782-9149
e-mail: rlmbkm@xxxxxxxx



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