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I am a vintage hifi collector. No way to fix that device without the appropriate service manual...thanks to your site I got it and every thing is easier now. I got the manual right after ordering: fast cheap accurate ... thank you
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Wonderful job clear. Qick fantastic. These people are really good. If even a problem arise they are wonderful assisting you. These scheme is so net despite this is a very old TV. Thank you for everything!!!!!!!!
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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
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Block diagram,play rec block diagram,adjusments, it's a very good well done repair manual.
C.REC Luminance NG
Is the video signal obtained from pin 31 of IC301? YES NO Check Scart jack or A/V jack and pattern
Is ON/OFF 5V supplied to pin 26 and pin 54 of IC301 at 5volts?
NO
Check ON/OFF 5V
YES
Is REC(H) supplied to anode of DA01 at 4.2volt?
NO
Check SSB Data and REC(H)
YES Is the video signal from pin 31 of IC301 fed to pin 38 of IC301? NO
Check IC301
YES
Is the luminance signal from pin 36 of IC301 fed to pin 35 of IC301?
NO
Check C302
YES
Is the luminace signal from pin 47 of IC301 fed to pin 52 of IC301? YES
NO
Is QV SYNC (H) supplied to anode of D301 at 0 volt? NO YES
Change IC301
Check QV SYNC
Is the modulating luminance signal from pin 52 of IC301 fed to pin 15 of ICA01? YES
NO Check record EQ circuit
To HEADAMP IC
17
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