Service manuals, schematics, eproms for electrical technicians

ONKYO TX-DS747

AUDIO - SERVICE MANUAL
Type: (ZIP)
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16.4 MB
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Category
AUDIO
SERVICE MANUAL
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  • Also known:
    ONKYO TXDS-747 TXDS747 TXDS 747 TX DS747 TX-DS747
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Onkyo A-830 végfokhiba.
Sziasztok!
Abban kérném a segítségeteket, hogy egy Onkyo A830-as erősítőnek kellene a rajza. Pontosabban elég volna csak a végfokról. Föltettem az SM-keresőbe, de pont olyan nincs. A hasonlóak mind IC-s kivitelűek, ez pedig tranzisztoros, mégpedig jó sok tranz-al van felépítve Jó volna, ha valakinek volna a végforól rajza, mert a többi ákör, és a másik végfok működik.
Köszönettel:
Attila
Onkyo CR-185 - szuperkondenzátor csere után is elfelejti az időt
Sziasztok,

egy Onkyo minihifi (CR-185) áramtalanítás után mindig lenullázza az óráját, gondoltam kicserélem benne a szuperkondit.
Azonban semmi nem változott, ugyanúgy 0:00 fogad ha kihúzom és visszadugom.

Merre érdemes elindulnom a hibakereséssel? 

 
ONKYO amplifier dolby surround, Problem with a Switching Diode
Hi everyone

Could somebody tell me if I can replace a switching diode to another one, the one installed in the onkyo is a 1SS252 and is 10 times more expensive that a 1SS355.

Usually I order the same but they are pricey (around 10.00 usd for a 100) and not commonly used, not many sellers.
For the 1ss355 every seller on line has it in stock and it's around 1 to 2 usd for a 100.
Ans they are available locally, not in china waiting 5 weeks for the part.
Thank you.


1SS352
Characteristic Symbol Rating Unit
Maximum (peak) reverse voltage VRM 85 V
Reverse voltage VR 80 V
Maximum (peak) forward current IFM 200 mA
Average forward current IO 100 mA
Surge current (10ms) IFSM 1 A
Power dissipation P 200 (*) mW
Junction temperature Tj 125 °C
Storage temperature Tstg −55~125 °C

1SS355

Characteristic Symbol Rating Unit
Maximum (peak) reverse voltage VRM 90 V
Reverse voltage VR 80 V
Maximum (peak) forward current IFM 225 mA
Average forward current IO 100 mA
Surge current (1s) IFSM 500 mA
Junction temperature Tj 150 °C
Storage temperature Tstg −55~150 °C
 
Onkyo TX-NR646 NG:LCRSLSRBLBR hiba javítása
Van egy Onkyo TX-NR646 házimozi. Bekapcsolás után ezt az üzenetet írja ki. NG:LCRSLSRBLBR. A reset nem segít. A végtranzisztorok mérve jók, feszültségek megvannak.
Van valakinek ötlete, hogyan tovább?

Előre is köszönöm.

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