Hi Garey et al,
Some very good points made re. this thread, no doubt about it...
However, when it comes to capacitors, I personally don't subscribe to the
notion of bridging any suspect unit with a good one: far better to remove the
suspect cap out of the "hot" portion of the circuit entirely, & temprarily
replace it with the good one that way.
I've had electrolytics bulge & fail on me in the HV capacitor string of my 2.5
KVDC p.s.---the last thing I'd want to do there is bridge a good one across a
suspect filter cap! The bad one would effectively negate any "good" that the
new cap might bring with it to the party...
Just my $0.02 worth...
~73!~ de Eddy VE3CUI - VE3XZ
***************************************
----- Original Message -----
From: "Garey Barrell" <[email protected]>
To: "Joe Loverti" <[email protected]>
Cc: <[email protected]>
Sent: Tuesday, December 28, 2010 11:24 AM
Subject: Re: [Drakelist] R-4A low audio output
Joe -
I'd sub out the 6GX6 and the 6EH5 first. If no luck, (or if you don't
have tubes handy,) you could check R44 for value. A dried out C131 will
drop the gain considerably, you can bridge it with any electrolytic you
have handy to check. The cathode voltage should be pretty close to 3 volts.
Beyond this will take more investigation.
73, Garey - K4OAH
St Charles, IL
Drake Service Supplement CDs for
2-B, 2-C/NT, A, B and C-Line,
TR-4 and TR-4C
Joe Loverti wrote:
> I have a 13-tube, R-4A receiver that is an excellent performer and fun
> radio to use – except for one issue: the audio output seems to be a
> bit low: Is it normal to have the volume control at nearly 1 o'clock
> for normal, comfortable listening? Other Drake and non-Drake receivers
> seem to have a comfortable audio level about 9 o'clock. Is there a way
> to boost this receiver's audio output or is there something obvious to
> check? Any suggestions always appreciated. Thanks in advance and happy
> holidays to all the Drake list folks.
>
> WW8X
> Joe Loverti Sr.
> Miamisburg, Ohio
>
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