![]() ![]() So, to begin with, I replaced all the electrolytic capacitors in the power supply section including the B+ 110V line. So removed it and was not surprised to see that it had leaked underneath though we cannot see anything from the top. The ESR of this cap was already tested to be very poor. Either there is a quick discharge or the cap itself is bad. ![]() Disconnected the power and checked for 300V DC in the tank capacitor. Then connected a 100W bulb and powered on the set. Disconnected the jumper wire that goes to primary of the FBT to the collector of Horizontal Output Transistor. Could not find any burnt fuse or other components in the SMPS primary. Ring testing on the SMPS transformer and FBT (LOT) was ok. Cleaned the board also thoroughly and brought it to work table for visual examination. Otherwise we are likely to damage the CRT neck, especially if we use force. ![]() We have to carefully see and then remove. ![]() Some CRT PCBs, if not opened before, might be stuck with some glue to the neck. Removed the CRT Board from the neck of the CRT by slightly shaking and slowly pulling it out without causing strain to the pins or neck. Discharged the anode, disconnected the yoke, CRT Earth Wire, Speakers and Degaussing Coil. TROUBLESHOOTING AND RECTIFICATION DONE: Opened and cleaned the set thoroughly. MAKE AND MODEL: ONIDA CO21SJG350BR CRT TV ![]()
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