#16
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UPDATE:
OK So I monkeyed around with this stereo a little more and I realized that I had actually installed them correctly the first time and the second time I installed them incorrectly (which is why I was getting no response from the relay) so then I removed the improperly installed transistors and installed them correctly like how they were supposed to be. So now I'm getting a response from the relay like I'm supposed to now, but when I go to hook up some speakers to the receiver the relay in there goes crazy it will click on and off continuously, but with no speakers hooked the the relay acts normal (it turns on once like its supposed to after a few seconds of turning on the receiver). There aren't any other fried components in this stereo, I tested the finals and none of them tested bad, and there weren't any bad resistors on the board either they all tested within spec. So I'm not sure what's going on here, maybe bad speakers? |
#17
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Got an 8 ohm resistor or a pair of headphones you don't care about to try as a dummy load?
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#18
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Quote:
But the thing is, I've tried hooking a dummy load to the receiver and tried rebiasing the amp and when I tried to rebias the amplifer section according to the service manual I can't get the bias down to zero, the bias measures around 35 VDC on both the right and left channels and turning the adjustments makes no difference in the bias voltage. Is there something I'm doing wrong? Last edited by vortalexfan; 02-19-2020 at 01:19 PM. |
#19
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yes, you are forging ahead without a proper diagnosis. You need proper test equipment and read the pioneer section at AK - the 737 has long since been worked out, complete with modern subs and gotchas.
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QuadDriver Pioneer Silver-face Collector |
#20
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I guess I can just go on their website and just read through the old postings, I just wouldn't be able to comment on any of them. |
Audiokarma |
#21
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Worked on hundreds of those beasts
Quote:
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[IMG] |
#22
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Check the voltage between the base and emitter, if working properly you should have .6 voltage across them.
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[IMG] |
#23
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Quote:
Although for some reason on the AM Band the noise floor is high, (very loud and pronounced hissing and static) compared to my SX-1000 TD. Is that normal? |
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