Recent content by coastman49

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    Pioneer S-W700 Subwoofer

    Did a retest of the newly installed Nichon 8200 mfd, 63 v caps. Measured FWB Gnd. to pin 4 =--6.62 vdc; Gnd to pin 1 = .337 vdc; across pins 2 and 3 = 4.45 vac. Doesn't make any sense. My load light is still bright. Looking at schematic and scratching my head. Could C-1203 be bad also...
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    Pioneer S-W700 Subwoofer

    Got the wrong caps fro DigiKey. Waiting for the correct ones. Can't find locally.
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    Pioneer S-W700 Subwoofer

    Got both removed and tested. Left one gone and right channel one boderline according to the ESR tester, which I am not sure I trust. Ordered two replacements from DigiKey. Should be here tomorrow.
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    Pioneer S-W700 Subwoofer

    OOPs! Got it out. Now working on the good one.
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    Pioneer S-W700 Subwoofer

    These caps won't budge. There is a white elastic glue type substance may be holding it in place as well. I guess I will try removing that.
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    Pioneer S-W700 Subwoofer

    Difficult to remove because power board has those 3 cables attached. Tried inverting it to get gravity assist. Should get them off shortly to complete the test. Will let you know. Thanks.
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    Pioneer S-W700 Subwoofer

    I thought I did that one earlier. Anyhow here it is: Ok. Did the Black probe on 1+. Got .542 on pin, 2, .537, pin 3 and 1.003 on pin 4 with Black probe on 1+. Also did 2 and 3, swapped polarity and got same reading both directions, OL. I think this id what you asked me to do. Let me know ...
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    Pioneer S-W700 Subwoofer

    Ok. Did the Red probe on 1+. Got OL on pin, 2, 3 and 4 with red probe on 1+. Also did 2 and 3, swapped polarity and got same reading both directions, OL. Waiting to hear from you before i move on to the capacitor test. Next: On to the capacitor test , pulling C1202 and replacing i with...
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    Pioneer S-W700 Subwoofer

    Took the FWB rectifier out of the circuit and measured using my multimeter on diode check. With black lead on the negative pin (4) and red lead on pin 3=OL, pin 2= OL, and pin 1= OL. Reversed the leads and , Red lead on pin 4 and black on pin 3=.531, pin 2=.535 and pin 1=.997.
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    Pioneer S-W700 Subwoofer

    Sorry uploaded wrong schematic. Here is the bottom 10 percent of sch-2
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    Pioneer S-W700 Subwoofer

    I think this is the rest of it.
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    Pioneer S-W700 Subwoofer

    I have attached the schematic containing the driver and output transistors. I will go back a re do the measurements and pull the rectifier.
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    Pioneer S-W700 Subwoofer

    Ok I have the Service manual. I can send you copies. What page? I will continue testing sometime today. Got a family medical crisis I am dealing with. Will pull the FWB and check the caps later today. Let me know what page of the manual you are needing as well. Thanks thus far for you...
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    Pioneer S-W700 Subwoofer

    Ok. I see it. Looks like the board for $167 has all the components. What do you think?
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    Pioneer S-W700 Subwoofer

    Just looked and didn't see it. Can you send me the exact link?
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