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SPLITDORF RV695 R-100 R-300 BATTERY RECEIVER SM

AUDIO - SERVICE MANUAL
Type: (PDF)
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85.8 KB
Page
1
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    SPLITDORF RV-695 RECEIVER RV695 R100 R300 BATTERY RV 695 100 300 R-100 R-300
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Dynacord Powermate 1000-2 mixer amp fault - Help needed

Hiya
I am repairing a Dynacord Powermate 1000-2 mixer/amp and have a question about DC blocking capacitors in the signal path.

 

I am getting a slowly dropping DC on the DISP1 node (output of I6AA op-amp) on switch-on.  This is causing the green "signal present" LED to come on on that channel which takes about 30 seconds to turn off.  It seems to be caused by a charge on C35A that dissipates slowly through R54A (1M Ohm).  

 

It seems to me, it would have been better to put the C35A on the output of I5AA with a resistor to ground.  Is there a reason why this would not work.  

 

I have checked all relevant components and power supplies and I cannot find any faults but I'm sure this is not normal behaviour.

 

Any help greatly appreciated.

PM1000 tone circuit

signal indicator

 

 

 

Volkswagen beta 5 code
Jó éjszakát, jó reggelt! A fenti Grundig által gyártott autórádió kódját szeretném megfejteni. A sorozatszáma: VWZ2Z2C3918454 Köszönöm. Üdv.
JVC CA-MXKB2 Locked
Sziasztok! A fent említett hifi, most már működik, csak a CD rész nem indul, mert ha megnyomom az open gombot azt írja a kijelző hogy LOCKED, mi a fene lehet vele, meg forgatja a lemeztartót, fejet is megemeli. Segítségeteket előre is köszi!
Grundig FineArts CD3 Laser csere

Tisztelt Kollégák!

Fenti HIFI-ben kellene Laser egységet cserélnem.

Az alábbi számokat találtam:

VAM1202/12

CDM31080

75952-030.55

Hol érdemes megrendelnem, kérdezem a tapasztaltabbakat?

előtre is köszönöm,

bbgames

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