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Pioneer SX 1980

Does anyone still have the schematic for this old beast laying around? What i am looking for is a resistor value. There is a 25 watt resistor just after the power switch on the power supply board. It has a thermal fuse under it. What i need is the value of the 25 watt resistor. The one that was in there (and open) was 5 ohms) . It looks like it was not original and i am suspicious that the value is too high. Can anyone confirm this resistor value?

Bob

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Reply to
BOB URZ
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Hi Bob,

I have an SX-980, and the service manual for it. It only has about 80W per channel, so the PA and PS must be different. I can check if there is a similar resistor and what value it has. BTW, there is a service manual for the SX-1980 on e-bay right now. Are you the one bidding on it?

Regards, Peter

BOB URZ wrote:

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Reply to
Peter Orban

No, i am not currently bidding on it. The 1980 is one of those HUGE beasts that weight a ton and were too big to fit in a standard stereo cabinet. I think it was 120-160w/ch or so as i recall. Its all working fine now. But i would like to verify the value of the resistor if i could. I doubt your unit has the same set up. I think this resistor was put in line to prevent massive current surge during start up. The unit is so heavy one guy can barely pick it up.

Bob

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Reply to
BOB URZ

That was 3.3 ohms, 20 watts for the US market, 6.2 ohms, 20 watts for 220 volt markets.

Mark Z.

Reply to
Mark D. Zacharias

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