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  1. E

    Issues after re-cap EPT36001A - Galaxy II

    This is interesting. Comparing the two radios. When mode is set to AM. TR14 on both radios has voltage (0.7v) on the Collector. When mode is switched to SSB on the 88HL (Reference radio) TR13 has voltage on the Collector. However on the Radio under repair there is no voltage on the...
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    Issues after re-cap EPT36001A - Galaxy II

    I was in fact too suspecting TR19 as I had a high voltage on the base. I took it out and tested it and it tested fine. But what I did find was that when I was investigating around D19 and R18 that using my signal tracer that it looked like these where shorting above board, as when I...
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    Issues after re-cap EPT36001A - Galaxy II

    While troubleshooting the S-Meter I noticed that I have way to much voltage on T19 Base. Where i should only have 1.7v I have close to 6v. Andy, Thanks again for the comprehensive input, this will give me plenty to look at over the weekend. For now I have closed it back up to get some...
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    Issues after re-cap EPT36001A - Galaxy II

    Hi Andy, you're a genius. Power feed was the problem. I had a tiny line break between R56 and R58. Receive is working again. I still don't have signal meter though on SSB receive. Thanks so much for sticking with me.
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    Issues after re-cap EPT36001A - Galaxy II

    Thanks Andy, investigating.
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    Issues after re-cap EPT36001A - Galaxy II

    Pin 6 of the PLL does seem to be locked with 7.62v.
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    Issues after re-cap EPT36001A - Galaxy II

    Hi Andy, not exactly though AM/FM receive worked only when C35 was removed. With C35 inserted I get the same on AM/FM/SSB. However with a Heathkit IT-12 earlier today I found a number of spot on the radio where I could hear both AM/SSB, just nothing in the RF AMP area. update : I don't know...
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    Issues after re-cap EPT36001A - Galaxy II

    Hi Andy, I am back. I think I set us on the wrong course when asked to check TP6 previously. I did not measure the signal there correctly. I am measuring 10.7Mhz there. I am thinking I have an issue in the RF AMP area, as I am not detecting anything on EBC of TR17. I am not detecting any...
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    Issues after re-cap EPT36001A - Galaxy II

    Andy, Thanks so much for this detailed information.
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    Issues after re-cap EPT36001A - Galaxy II

    If I am right in my thinking the junction of C72 & C74 is getting fed up through C73? If so I have 2.66v on one side of C73 and nothing on the leg towards C72/C74, I presume i should have? PS I did swap out D27
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    Issues after re-cap EPT36001A - Galaxy II

    I believe you are spot on with the area of D27 as I neither have voltage on the anode or cathode side.
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    Issues after re-cap EPT36001A - Galaxy II

    Thanks for all the efforts Andy, I am reading and checking thanks. I posted the piece about D40 D39 just as you posted.
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    Issues after re-cap EPT36001A - Galaxy II

    D40 still has 7+v on both sides regardless of USB/LSB being selected. D39 only high the cathode side.
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    Issues after re-cap EPT36001A - Galaxy II

    Update : Replaced TR50 & TR51, and TR52. Voltages are good in that area now, but still no SSB receive.
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    Issues after re-cap EPT36001A - Galaxy II

    Thanks guys for the awesome help and support and advice and knowledge sharing. I have checked both D39 and D40, D40 stays high all the time regardless of USB/LSB selected. D39 was low on the anode end. I did replace it out but still low. Is there a transistor that's involved in the switch...
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    Issues after re-cap EPT36001A - Galaxy II

    TR 23 = only have .54v on the Collector nothing on base or emitter.
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    Issues after re-cap EPT36001A - Galaxy II

    Likewise just back from Dinner Andy. I located in Utah.
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    Issues after re-cap EPT36001A - Galaxy II

    Sorry Andy which is TP6? Please.
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    Issues after re-cap EPT36001A - Galaxy II

    Sorry we doubled on post. Yes will scope.