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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:30 pm 
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The cap is wired across primary connection that goes to pin 3 tube 3 224 and secondary connection to grid tube 4 235


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:38 pm 
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i just checked the schematic. the grid of the 35 would normally be connected to ground through the IF secondary.
If you have the GOOD winding on the plate side, and then coupling cap to the grid of the 35 (IF amp), then the grid no longer has a DC reference.
So, you need to add a grid resistor----~ 1 megohm

Also, the bad winding should not be connected to anything.

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"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:44 pm 
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So I need to add a 1meg resistor to grid of IF tube 235 and ground?


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:48 pm 
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spsquires wrote:
So I need to add a 1meg resistor to grid of IF tube 235 and ground?

yes---the tube grid has to have a DC reference---otherwise, how would the bias be correct?

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"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:51 pm 
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Also do I need resistor in place of secondary coil?


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:56 pm 
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spsquires wrote:
Also do I need resistor in place of secondary coil?

No---the resistor I suggested is ---for DC purposes---replacing that coil.

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-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Mon 07, 2019 10:58 pm 
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Thanks I will try resistor tomorrow.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 11:01 am 
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The 1 meg resistor did not change anything at all


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 1:45 pm 
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Did you do the IF alignment?

When you bypass an open IF winding, you will have reduced performance.

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-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 1:47 pm 
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No I did not do an alignment. Also has I said before I did not change cap blocks yet either.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 2:03 pm 
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Things to do:
--finish replacing capacitors
--alignment
--try different values for the IF coupling capacitor (changing this will affect alignment)

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-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 2:05 pm 
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I am having problems understanding cap blocks


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 2:56 pm 
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This thread includes extensive discussion of how to wire the capacitors.

My method:
--assemble the capacitors for a block, with color-coded wires for the various connections.
--wrap with electrical insulating tap.
--install in the can with some kind of "filler" material
--connect the wires according to the schematic

I advise you to re-read the thread, and then ask specific questions.

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-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Tue 08, 2019 4:09 pm 
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I am going to cut block out all together.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Oct Wed 30, 2019 12:59 am 
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Also still looking for IF transformer


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Nov Sun 03, 2019 7:39 pm 
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Still looking for IF transformer.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Nov Sun 03, 2019 8:13 pm 
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You really should start a new thread in the classified section for a WTB (want to buy) for your IF transformer.

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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Nov Sun 03, 2019 8:25 pm 
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I have done that with no luck.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Nov Sun 03, 2019 8:30 pm 
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The odds of someone having one of those is not high---have you been bumping the ad in the classifieds?

You could rewind it or find someone else willing to try it.....

The best solution is probably an IF transformer from another radio---I'll bet you can find one that fits in the same can

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-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Westinghouse model 801 grandfather clock radio.
PostPosted: Nov Sun 03, 2019 8:49 pm 
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I would try a rewind it myself but do not know how many turns and what type of wire.


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