TV LG-CF21D79, oversaturated color image B / W is not as if there is no luminance signal. Replacing the video processor has given nothing TB1238BN. Malfunction was chip SECAM TA1275AZ.
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TV LG20 to the MS-84A chassis. The defect can and non-proliferation (met once), but I found it interesting. Slow to respond to commands, poorly configured and does not remember the setting. The service turned out to be all the settings on the zeros, but when you enter the proper initialization mode and out of service, it was the same. Replacing memory has given nothing. It turned out, two of the eight resistors in the assembly, instead of ceramic 4,7kOM ~ 2.4kOm shown. The problem with the chassis LG MC-019A. TV does not come out of standby mode, if the power supply line to measure-about 70 volts. First of all, see C820 220 MF 160 B, often interrupted one of the conclusions of the container, forming conclusions made at a very acute angle.
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LG CF-21D70 (Chassis: MC-64A). When you turn on - it goes into standby mode, and then completely extinguished. The analysis showed that the input line voltage, output voltage + B gradually increases to more than 160 in (normal + 125V) and then triggers the internal protection and breaks the generation of PD. Analyzing found defective electrolyte S824 4,7mkF 50B (leakage, desiccation or increase ext. Conjugated. HF), set between 4 CONCLUSIONS. optocoupler IC801 and 7 CONCLUSIONS. STRS5707. What pleases - it is timely self-protection, which is not given to roam murderous + B = 160-180V.