4/8/2006 10:50:28 PMwilliam shenette(38498:0)
HI There I own a GE E-105 and I am in need of a transformer I have this radio which I purchased at one of out anual club meets it needs a lil tlc but my main concern is the transformer and how it needs to be replaced and how i need it. I recapped it and but not the filter caps yet and it blows house fuses so my concern is to find a good working order transformer any one know where i can get one Thank You All & God Bless Everyone
4/8/2006 11:28:07 PMMark(38499:38498)
Before you replace the transformer you must replace the filters. I would also verify if the transformer is truly shorted. You could have a shorted line filter capacitor, a shorted power cord, a shorted filter capacitor, a miswire and many other possible problems. In many cases the transformer primary opens up when it has been overloaded all though shorted tranformers do occure. If you don't replace the filters, you will most likely cause your new transformer, if you need one, to burn out again.
MRO
4/9/2006 12:38:31 AMPeter Balazsy(38501:38499)
Here's your print:
http://www.nostalgiaair.org/PagesByModel/769/M0007769.pdf
The DC resistance for each winding of the transformer is marked here.
I would suggest you try removing the rectifier tube 5z4 first and to un-solder the positive leades of the the 2 filter caps.
This way there is practically no load on the transformer except for the 6v filaments.
You might also pull all the other tubes too.
Then try turning it on and see if you still blow a house fuse.
If you do then it is possible there is a short in the transformer primary winding.
Then using a digital ohm meter..first unsolder all the windings and ohm them according to the print.
After you have ascertained this... you can then begin to shop for a transformer.
4/25/2006 2:56:10 PMbill shenette(38864:38501)
:Here's your print:
:http://www.nostalgiaair.org/PagesByModel/769/M0007769.pdf
:
:The DC resistance for each winding of the transformer is marked here.
:
:I would suggest you try removing the rectifier tube 5z4 first and to un-solder the positive leades of the the 2 filter caps.
:This way there is practically no load on the transformer except for the 6v filaments.
:You might also pull all the other tubes too.
:Then try turning it on and see if you still blow a house fuse.
:If you do then it is possible there is a short in the transformer primary winding.
:Then using a digital ohm meter..first unsolder all the windings and ohm them according to the print.
:After you have ascertained this... you can then begin to shop for a transformer.
4/25/2006 3:02:38 PMbill shenette(38865:38864)
::Here's your print: Thank You so much i willtry this
::http://www.nostalgiaair.org/PagesByModel/769/M0007769.pdf
::
::The DC resistance for each winding of the transformer is marked here.
::
::I would suggest you try removing the rectifier tube 5z4 first and to un-solder the positive leades of the the 2 filter caps.
::This way there is practically no load on the transformer except for the 6v filaments.
::You might also pull all the other tubes too.
::Then try turning it on and see if you still blow a house fuse.
::If you do then it is possible there is a short in the transformer primary winding.
::Then using a digital ohm meter..first unsolder all the windings and ohm them according to the print.
::After you have ascertained this... you can then begin to shop for a transformer.
4/25/2006 7:41:03 PMDoug Criner(38874:38865)
Can't add much to what Mark and Peter said.
I agree that power xfmrs seldom short. Usually, if they fail, it's by opening.