Is it clear to everyone that the maintenance of the hall tv power panel is difficult to maintain, but it can be done by itself, but how should we fix it when the television is out of service? Today, the editor teaches you how to fix the failure of the hall tv power panel。
Power panels are, by definition, panels dominated by power processing, which vary according to subsequent circuit needs, such as type of input output: communication (ac), direct flow (dc), pulse, high pressure, low pressure, high frequency, low frequency, one-way, multi-road, variable type: lifting, pressure, constant pressure, constant flow, linear, non-linear control, electrical mode: wire-collide transformers, electronic device switches。
The main panel is covered with a cardboard from the fan, which works for two hours, but in turn the panel is covered by a cardboard, the main panel from the fan is blown off in less than 10 minutes and the temperature is measured as follows: the high-pressure-driven mos disassembly at temperatures above 70 degrees, apfc at 55 degrees, pwm at 46 degrees and the main plate at 70 degrees。
Mos, which replaced the high voltage power source, was originally st f11nm60n to br (blue arrow) irf12n60, which was reduced to 65 degrees, but still closed for about 30 minutes, measuring all the electrical capacity on board is in range and most of the electrical resistance has been measured in a normal manner; the repairs are in a difficult state。
3. Ic: 7382, near the main diode, with a heat wind rifle blowing high-voltage power, shut down in less than 10 seconds, failure locks on the quarantine-driven ic and peripheral electricity routes, invalid replacement of self-lifting capacitors, ineffective replacement of four triodes of wave-corrected pliers, i am hanging, highly suspected of having poor heat stability of 7382, but unable to prepare for suicide。
4. The high-voltage power source had an 8-foot ic of 393 to monitor currents and protective actions, which were to be scrapped, but was afraid of further malfunctions。
This is where the maintenance of the hall tv panels came in. Can you tell about the maintenance of the hall tv panels, though they still need our attention? This day, the young editor introduced the four-point approach to self-maintenance of the tv panels, hoping to help you. If you can't do it yourself, you can ask a professional maintenance worker to do it。
