Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
RCA F32676SB CTC197CD Flyback failure
Hello,
I have a 32" RCA model F32676SB ( chassis CTC197CD) that clicks the degauss relay about 3-4 times before giving up. At first it would try a few times and eventually come up, but with HV snapping sounds. I checked out the FBT and saw signs of leakage so I plan on replacing it but I'm wondering what else probably should be replaced or at least checked. I plan on replacing the HOT and reflowing the assorted transformer connections that seem to be a QC issue with this set. The Degauss thermistor is also detached from its leads so I'll replace that as well. The info I have is the FBT is part #237506 and the HOT is a 2SC5148, no clue on the thermistor #. Any insite would be greatly welcome! Thanks! -Bruce |
#2
|
|||
|
|||
RCA F32676SB CTC197CD Flyback failure
The flyback is a common failure item for many early production series ctc195
and ctc197 chassis. Be forewarned that when the flyback fails on these it many times will arc a hole right through the glass of the tube underneath the yoke where you cannot see it. Check the tube out first before wasting the time and money on the flyback. If you can get the filaments to light up properly with 6 to 7v dc on them and they do not flame out from air in the tube, the arc through the glass problem will be eliminated and you can proceed with the repairs. David brewster wrote in message om... Hello, I have a 32" RCA model F32676SB ( chassis CTC197CD) that clicks the degauss relay about 3-4 times before giving up. At first it would try a few times and eventually come up, but with HV snapping sounds. I checked out the FBT and saw signs of leakage so I plan on replacing it but I'm wondering what else probably should be replaced or at least checked. I plan on replacing the HOT and reflowing the assorted transformer connections that seem to be a QC issue with this set. The Degauss thermistor is also detached from its leads so I'll replace that as well. The info I have is the FBT is part #237506 and the HOT is a 2SC5148, no clue on the thermistor #. Any insite would be greatly welcome! Thanks! -Bruce |
#3
|
|||
|
|||
RCA F32676SB CTC197CD Flyback failure
"David" wrote in message ...
The flyback is a common failure item for many early production series ctc195 and ctc197 chassis. Be forewarned that when the flyback fails on these it many times will arc a hole right through the glass of the tube underneath the yoke where you cannot see it. Check the tube out first before wasting the time and money on the flyback. If you can get the filaments to light up properly with 6 to 7v dc on them and they do not flame out from air in the tube, the arc through the glass problem will be eliminated and you can proceed with the repairs. David Thanks David! I'm sure that if the tube is cut the set is worthless (cost wise) to repair. -Bruce |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Arcing Flyback Transformer - HELP | Electronics Repair | |||
Switching Power Supply Failure | Electronics Repair | |||
Distortion failure on power amps | Electronics Repair | |||
21" monitor with FIMI chassis C2182DAS and High Voltage failure | Electronics Repair |