Please help Identify

P

Peter Kolbe

Guest
Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in (series
lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

Thanks
Peter



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Ok

bit of googling and it is a PYC 39G

Anybody know if I can get a schematic?

P

"Peter Kolbe" <peter@fhc.org.za> wrote in message
news:hng1s2$1k2u$1@adenine.netfront.net...
Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

Thanks
Peter



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Click to expand...


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
 
Peter Kolbe <peter@fhc.org.za> wrote in message
news:hng411$1nv3$1@adenine.netfront.net...
Ok

bit of googling and it is a PYC 39G

Anybody know if I can get a schematic?

P

"Peter Kolbe" <peter@fhc.org.za> wrote in message
news:hng1s2$1k2u$1@adenine.netfront.net...
Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

Thanks
Peter



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Click to expand...

Pye 39 would get you further


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
 
On Sat, 13 Mar 2010 14:49:52 +0200, "Peter Kolbe"
<peter@fhc.org.za>wrote:

Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in (series
lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732
Click to expand...
rec.antiques.radio+phono.

Your radio was likely made around 1948. Pye was "absorbed" into
Philips for lack of a better word. Personally I wouldn't have much
trouble working on a set like that with little technical info. Tubes
need certain voltages to operate no matter what they are in. Might
take me ten times as long to repair but eventually I would track down
the trouble spots and being partial to vintage tube gear I'm used to
breaking out the crystal ball for answerers.
 
Thanks, PYE is correct.

I found that the power switch on one of the controls has had it, bypassed
that and the set has sprung into life,

dunno how it is supposed to sound, but perhaps the caps are a bit had it.

\Will carry on investigating, though being my first tube set, it is a bit of
a learning curve from modern electronics.
<Meat Plow> wrote in message news:3jd1hd.rq7.17.8@news.alt.net...
On Sat, 13 Mar 2010 14:49:52 +0200, "Peter Kolbe"
peter@fhc.org.za>wrote:

Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series
lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

rec.antiques.radio+phono.

Your radio was likely made around 1948. Pye was "absorbed" into
Philips for lack of a better word. Personally I wouldn't have much
trouble working on a set like that with little technical info. Tubes
need certain voltages to operate no matter what they are in. Might
take me ten times as long to repair but eventually I would track down
the trouble spots and being partial to vintage tube gear I'm used to
breaking out the crystal ball for answerers.
Click to expand...


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
 
On Sat, 13 Mar 2010 17:51:23 +0200, "Peter Kolbe"
<peter@fhc.org.za>wrote:

Thanks, PYE is correct.

I found that the power switch on one of the controls has had it, bypassed
that and the set has sprung into life,

dunno how it is supposed to sound, but perhaps the caps are a bit had it.

\Will carry on investigating, though being my first tube set, it is a bit of
a learning curve from modern electronics.
Click to expand...

I suppose the electrolytic's are woefully depleted. One thing though
when and if you replace electrolytics with modern devices supply
voltages tend to be higher than what the radio called for. That would
call for a different dropper resistor or two.



Meat Plow> wrote in message news:3jd1hd.rq7.17.8@news.alt.net...
On Sat, 13 Mar 2010 14:49:52 +0200, "Peter Kolbe"
peter@fhc.org.za>wrote:

Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series
lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

rec.antiques.radio+phono.

Your radio was likely made around 1948. Pye was "absorbed" into
Philips for lack of a better word. Personally I wouldn't have much
trouble working on a set like that with little technical info. Tubes
need certain voltages to operate no matter what they are in. Might
take me ten times as long to repair but eventually I would track down
the trouble spots and being partial to vintage tube gear I'm used to
breaking out the crystal ball for answerers.



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Click to expand...
 
Hi All.
The set has quite a few wax caps, will work on changing them. I will
actually scope the thing tomorrow to check what is happening.

I am getting quite a few signals with only 5ft of cable as an antenna (one
signal I definately identified as 700Km away in johannesburg)

once I have recapped the set, and figured out how exactly the dial cable
goes back, then I will try with a longer antenna.

I have not found a manual for this set, but I found the manuals for some
other pyc sets that have a similar tuning dial layout and cabling, so I will
work from that


I do not know what impedance speaker is supposed to be on this set (only got
the chassis, not the cabinet), but I am currently using 1 side of a computer
speaker set (not the amplifier, just the speaker itself)

When I power the set up tomorrow, I will try and record the sound it is
producing and post that.

This is the first tube set I have ever worked on, so I was surprised that it
is actually in a working condition off the bat.

The tubes are all originals, with the numbers clearly visible, and also the
nameplate says what the tube numbers are.

P
"Peter Kolbe" <peter@fhc.org.za> wrote in message
news:hng1s2$1k2u$1@adenine.netfront.net...
Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

Thanks
Peter



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Click to expand...


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
 
On Mar 13, 6:49 am, "Peter Kolbe" <pe...@fhc.org.za> wrote:
Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down.

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in (series
lightbulb of course),

here is the URL to the pictureshttp://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

Thanks
Peter

--- news://freenews.netfront.net/ - complaints: n...@netfront.net ---
Click to expand...
The pix are mostly rather out of focus, if you need to post again.
please check the focus on the camera.
 
On Mar 13, 9:51 am, "Peter Kolbe" <pe...@fhc.org.za> wrote:
Thanks, PYE is correct.

I found that the power switch on one of the controls has had it, bypassed
that and the set has sprung into life,

dunno how it is supposed to sound, but perhaps the caps are a bit had it.

\Will carry on investigating, though being my first tube set, it is a bit of
a learning curve from modern electronics.





Meat Plow> wrote in messagenews:3jd1hd.rq7.17.8@news.alt.net...
On Sat, 13 Mar 2010 14:49:52 +0200, "Peter Kolbe"
pe...@fhc.org.za>wrote:

Hi All,
I decided to try my hand at restoring an 'antique' electronic item

Down in Margate, South Africa, these seem to be very hard to track down..

I just picked up this valve set at a 2nd hand dealer, and wondered if
anybody had more info on it for me, before I even try to plug it in
(series
lightbulb of course),

here is the URL to the pictures
http://kolbep.webng.com/kolbep/album/Valve%20Radio/?id=25732

rec.antiques.radio+phono.

Your radio was likely made around 1948. Pye was "absorbed" into
Philips for lack of a better word. Personally I wouldn't have much
trouble working on a set like that with little technical info. Tubes
need certain voltages to operate no matter what they are in. Might
take me ten times as long to repair but eventually I would track down
the trouble spots and being partial to vintage tube gear I'm used to
breaking out the crystal ball for answerers.

--- news://freenews.netfront.net/ - complaints: n...@netfront.net ---- Hide quoted text -

- Show quoted text -
Click to expand...
If the major power supply capacitors are shot, you will hear a loud
hum as soon as the tubes warm up. If the hum varies as you turn the
volume pot up and down, then the hum is likely coming from before the
audio amplifier stages. If you can't read the tube numbers from the
tubes because of dirt or being wiped clean, one useful trick is to put
the tubes in a refrigerator for a few hours, then bring back out into
the room temperature. As moisture condenses on the tube, you may be
able to read some further information. You can do the same equivalent
by just breathing on a room-temperature tube, like you would breath on
a mirror to see if you are alive or not<G>.
 
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