21st Dec 2009, 12:17 am | #121 |
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Re: Newb Stumped on a Derwent
6v between 4 & 5
the other end of the resistor went to pin 4 of the 42 |
21st Dec 2009, 12:20 am | #122 |
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Re: Newb Stumped on a Derwent
Question - is there a resistor between Pin 4 and Chassis right now. Yes or no?
Cheers, Steve P.
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21st Dec 2009, 12:25 am | #123 |
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Re: Newb Stumped on a Derwent
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21st Dec 2009, 12:26 am | #124 | |
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Re: Newb Stumped on a Derwent
Quote:
Last edited by electrogram; 21st Dec 2009 at 12:28 am. Reason: missed a word |
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21st Dec 2009, 12:27 am | #125 |
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Re: Newb Stumped on a Derwent
Does it measure OK? 500 Kohms or so?
Cheers, Steve P.
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21st Dec 2009, 12:28 am | #126 |
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Re: Newb Stumped on a Derwent
510k to be exact or 510,000
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21st Dec 2009, 12:30 am | #127 |
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Re: Newb Stumped on a Derwent
Fine. Have you got a scope I wonder?
Cheers, Steve P.
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21st Dec 2009, 12:32 am | #128 | |
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Re: Newb Stumped on a Derwent
Quote:
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21st Dec 2009, 12:35 am | #129 | |
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Re: Newb Stumped on a Derwent
Quote:
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21st Dec 2009, 12:35 am | #130 |
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Re: Newb Stumped on a Derwent
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21st Dec 2009, 12:39 am | #131 |
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Re: Newb Stumped on a Derwent
hmm
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21st Dec 2009, 12:40 am | #132 |
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Re: Newb Stumped on a Derwent
Pity. We could have looked for the Audio.
It's unlikely that THAT capacitor is faulty, but it happened to me once, so it's possible. Cheers, Steve P.
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21st Dec 2009, 12:45 am | #133 |
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Re: Newb Stumped on a Derwent
your up for giving me pain arn't you ....... can you imagine numpty boy and an oscilloscope. I bought a book "Understanding oscilloscopes and display waveforms", these guys are mad!!!
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21st Dec 2009, 12:47 am | #134 |
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Re: Newb Stumped on a Derwent
Im really wondering if we could have a piccy of the whole underside of the chassis - this is just an overgrown US midget set, so really shouldn't present this much trouble getting the audio stage to work reliably!
I also think we need to standardise on some terminology here.....
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21st Dec 2009, 12:49 am | #135 |
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Re: Newb Stumped on a Derwent
He's right, we should. But, looking at the picture that OTT drew, I would like to disconnect the tone control and try it.
Cheers, Steve P.
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21st Dec 2009, 12:49 am | #136 | |
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Re: Newb Stumped on a Derwent
Quote:
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21st Dec 2009, 12:51 am | #137 |
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Re: Newb Stumped on a Derwent
a photo was taken here it is again
Oops it won't let me load same one anyway its not correct now as the 50uf is back in place the right way round. Last edited by oldticktock; 21st Dec 2009 at 12:57 am. |
21st Dec 2009, 1:01 am | #138 | ||
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Re: Newb Stumped on a Derwent
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Last edited by electrogram; 21st Dec 2009 at 1:12 am. Reason: missed a word |
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21st Dec 2009, 1:11 am | #139 |
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Re: Newb Stumped on a Derwent
as requested and 23v is the result
Last edited by oldticktock; 21st Dec 2009 at 1:16 am. |
21st Dec 2009, 1:22 am | #140 |
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Re: Newb Stumped on a Derwent
So with THAT capacitor connected you get 6V between pins 4 and 5 of the 42, and with that capacitor disconnected you get 23V between pins 4 and 5?
If that's the case then THAT capacitor is faulty.
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