After I unsoldered it, the short circuit from the network electrolyte disappeared. Instead
c3752 allows you to install a huge variety of transistors without a diode or resistor in the harness.I always install either Bu508AF or MD1802 . In this case, for testing, I soldered the MD1802 transistor to the back side of the board .
Next, I quickly rang the transistors for short circuits, and almost immediately found a short on transistor Q605 . Having hurried to unsolder it, I found that it rings normally, and the 12-volt zener diode D611 turned out to be broken .
Having soldered the q605 transistor and installed a new zener diode, I decided to replace the C608 capacitor, rated at 33 μF at 50 volts. After checking, it turned out that its
esr was already 6 Ohm, which is already very bad. Instead of 33 μF at 50 volts, I installed a capacitor with a nominal value of 47 μF at 63 volts.
After that, I plugged the TV into the network. The lamp australia telegram data lit up a little, and the TV turned on. The voltage +B was 100 volts, taking into account that the TV works through the lamp. Then, I boldly installed a new fuse, and started the TV.
125. Dear colleagues! I offer a previously unknown and simple way to restore
the Funai MK-7 R-214 processor, beloved by all craftsmen (the defect is standard). Using
a hair dryer, heat the processor (without desoldering) for 30-50 seconds. After cooling, turn it on -
the TV works normally. I can't say exactly what happens inside the processor, but it has been tested on more
than 30 devices over 1.5 years, there have been no repeats. If you don't believe me, I advise you to try (
you don't risk anything). Alexander St. Petersburg
2. FUNAI Good TV, in terms of quality - price, the picture is very good and clear.
But the defect is very expensive. The TMP47C processor with firmware R214 breaks down.