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Sunday, May 15, 2011

repair of video recorders, tape-recorders and Writing type-writers.

2:33 PM

Repair of video recorders






"Samsung VK-350"


Don't on. The capacitor C110 (100m) is bad. And the zenner diod ZD101 (22V) is chort.






"Toshiba V-404G"



Don't on. The capacitors CP008 (100m) and CP007 (10m) in the Power Supply is bad. 






Repair of tape-recorders






Audio system "Osaka OS-550"


No sound.The chip TC9153 is bad.





Car audio "Yamaha"


No sound.The chip DBL1032D is bad.





Car audio "Pioneer KEH-P4450"


Is not on. The chip IC552 TA8251AH is bad.

Writing type-writers.



Olivetti-55

Not works. The termal fuse in the transformer of power supply is open. Short it.


Olivetti-540

Is not on. The transistor TR3 (MPS730) is bad.

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