The set wont power up, just get several clicks. The x-former fly looks to have smoked, have a new one coming. I have also noticed that a dime size disk, appears to be solid with two legs soldered on, it says 100-o1a and 81775 or 91775 the legs have let loose, is it some sort of resistor or a thermal fuse? can I solder it back in ? Thanks Tim
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Re: Wont power up
The G36788LV uses the CTC197 series chassis. When the set will not power up, the most common cause is a shorted flyback, so you are probably on the right track there. The small part you describe is the degaussing thermistor. It only works for the first half-second when the set is first turned on, and it sends power to the degaussing coil. If you are careful, you can solder the legs back on but be careful not to heat the thermistor too much because it will crack in half if overheated with a soldering iron.
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HI. this is a malfunctioning fly back transformer. it is connected directly to the picture tub, and is part of the main power sector as well. The fly back transformer can become covered with lint overtime. this will induce a very violent arcing effect that will usually blow the entire power sector.
Replacing the fly back and affected components will fix this issue.
HI, the fly back transformer has failed in your unit. this will occur if the dust level is high inside the set. the dust will settle on the cooper windings and, create an arch that will short out the entire power sector of this unit.
The fly back is usually the first to take the hit. replacing this will fix this issue.
Your description indicates that the power supply has failed; the noise you are hearing is probably caused by a relay that is interrupting the AC supply to avoid damaging the supply any further or causing a fire.
Disconnect your set from the wall and allow several hours (overnight is better) so that dangerous voltages have a chance to discharge.
You will have to gain access to the lower section of your system to look for a separate board with larger components on it, some cylindrical (capacitors), some block-like (chokes and transformers).
If you can locate this board, it should be user replaceable.
The next step would be to look for unique markings on that board looking like an assembly number.
With that in hand and the model number of your set, look for the RCA service center in your area and call them to determine whether they have a repair or replacement assembly.
If only a replacement is available, keep the failed unit for possible repair in the future when the new one fails since mfrs. will not have entire assemblies available in a few years.
If the set will not turn on with the power button on the front of the set, you must then try turning it on with the remote. You must be sure that the remote is working correctly. If the set turns on with the remote, then your power button itself is bad or has cracked loose. This is easily fixed without having to replace the board. If the set does not turn on with a working remote, then something inside the set has failed and it should be serviced by a qualified tech.