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I wanted to connect an extension cable to mains supply to charge my phone. When I reconnect the TV plug, the screen did not turn on and the red standby light started flashing with a slight click. I unplugged the TV to check the motherboard. Indeed I was afraid this short circuit had damaged sensitive components such as transformer high voltage THV … Fortunately there were no black traces of burn, but a capacitor behind the THV seems to be bit inflated. When I measured its capacity, the DMM displayed 4.28nF while the nominal value is 47uF. Read More

This Syber CRT TV 21″ came in with the complaint of no tuning and no channel. Later the display became blue screen- see the photo below:

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Received call from a friend that he is having sound problem with his CRT TV. Stating problem that TV’s sound is very low even from remote control volume keeping on high setting there is very low variation is audible.

So while I am way to my office I just drop down to his home for just checking what the symptom is. Now a day OLD TV reception system through antenna is gone and now everybody is using set top box. I have checked the volume control position form both the unit TV as well Set top box there is not much variation is audible it gives effect of only 15% of sound out of 100% which is not enough if person is seating even around 5 Feet area . Read More

Opened the TV for visual inspection and found fuse blown off

So first of all I have connected 60W bulb across the fuse terminal for fault finding.

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The complaint of this LG CRT TV was no power and as usual the first thing to do is to check on the main fuse. Before I could access to the main fuse, I found that the circuit board was full of dust thus I cleared all dust first by using a vacuum cleaner before checking on the main fuse.

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