أعطال وصيانة تليفزيون-Repair-TV-AIWA

AIWA TV-C141KER
Ingredients: 21 411 TMP47C837N-processor, memory, 93C46, video TA8759BN, BP
STR58041A, ULF AN5265, TDKS HFL1530G, Wed D1555, KP TA8403K
TV does not turn, you hear a thin squeak. Line transistor - a normal, broken
safety Zener R2M. When checking for a light bulb 60W output voltage is too high
up to 170. Proved to be faulty capacitors S813, S815 and S814 h25v 100.0 22.0
h50v (dried and ESR> 30om).
After replacing the voltage Wed snizelos to 130 in. It turned out that there is
no +12. Blown fuse SR802 from the output of the rectifier 15 in. Were shorted
to ground the input and output of the stabilizer 12 in due to the fact that it
struck stabilizers D822 to D308 and 4.7 in at 12c. After replacing the power
supply voltage Wed became normal in 115. TV works.





Aiwa TV-145.
Korotnula IC801 STRS6707, breaking R828, R829, R805, R804, R811.
The board is covered with soot, which is badly washed out. Vypayal all the
elements of BP, with a scalpel to remove soot and gently touch, and then
Washed 2 times atsetonom.V S835 and S811 "left" ESR - zamenit.Posle
replace all the bad elements - all OK.