GBrown wrote:


Mike:
I had this problem with the same receiver. It is the line bypass caps.
One or both are no good. Replace with 1600 volt discs and your problem is
solved.

Aha! That might be it. Better (more logical) choice on caps nowadays
would be the ac-rated X-Y disc caps. Available at Mouser, Justradios, etc.

-Bill M

"-ex-" wrote in message
...
GBrown wrote:


Mike:
I had this problem with the same receiver. It is the line bypass
caps.
One or both are no good. Replace with 1600 volt discs and your problem
is
solved.

Aha! That might be it. Better (more logical) choice on caps nowadays
would be the ac-rated X-Y disc caps. Available at Mouser, Justradios,
etc.

-Bill M

Yes, Gary has a good point. I didn't expect they placed the caps
behind the fuses, most manufacturers had them right at the line
cord entry!

Pete

"Edmund H. Ramm" wrote in message
...
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

73, Eddi ._._.
--


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside. It should be
easy to find a replacement from a junker, even from another
brand, that would work though.

Pete

" Uncle Peter" wrote in message
news:1hsOe.2111$sw6.1426@fed1read05...

"Edmund H. Ramm" wrote in message
...
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

73, Eddi ._._.
--


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside.

Yikes! I could buy a brand new standard transformer from Hammond for
$40 -$50. No, it wouldn't be original, but would it matter? Are R-100s
really down to the $20 range?

!!!!!!!!!!!!

"BFoelsch" wrote in message
...

" Uncle Peter" wrote in message
news:1hsOe.2111$sw6.1426@fed1read05...

"Edmund H. Ramm" wrote in message
...
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

73, Eddi ._._.
--


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside.

Yikes! I could buy a brand new standard transformer from Hammond for
$40 -$50. No, it wouldn't be original, but would it matter? Are R-100s
really down to the $20 range?

!!!!!!!!!!!!

Further to my previous message....

What I usually do in the case of a blown power transformer is as follows.

If an exact replacement transformer is not available or affordable, I buy a
good electrical replacement from Hammond or whomever. It is never a good
mechanical match, as we all know. Rather than hacking the chassis to death,
I make up an adapter plate. I take a piece of flat steel (old computer cases
are exactly the right thickness, and they're free) and drill two sets of
holes in it, one to match the original transformer, one to match the new
transformer. I then mount the adapter plate either above or below the
chassis using 8-32 hardware and spacers of the appropriate length. Next I
mount the transformer to the adapter and wire it up. This permits me to use
the "wrong" transformer, but does no damage to the collector value in case
the "right" transformer comes along; I just remove the adapter plate.

Before you dumpster the R-100, send it to me. I'll give you the price of a
new transformer for it! The R-100, if I remember correctly, has only two
windings, 600VCT and 6.3 filament. Replacing the transformer as I describe
is an easy afternoon project! Radio Daze and AES both list suitable
replacement transformers.

Just so happens, I have a good tranny from a R-100A, ready to ship, and it
doesn't blow fuses.

--
Regards,
Gary...WZ1M
" Uncle Peter" wrote in message
news:1hsOe.2111$sw6.1426@fed1read05...


"Edmund H. Ramm" wrote in message
...
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

73, Eddi ._._.
--


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside. It should be
easy to find a replacement from a junker, even from another
brand, that would work though.

Pete

I would hope it had a primary winding to.

--
Regards,
Gary...WZ1M
"BFoelsch" wrote in message
...


"BFoelsch" wrote in message
...

" Uncle Peter" wrote in message
news:1hsOe.2111$sw6.1426@fed1read05...

"Edmund H. Ramm" wrote in message
...
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

73, Eddi ._._.
--


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside.

Yikes! I could buy a brand new standard transformer from Hammond for
$40 -$50. No, it wouldn't be original, but would it matter? Are R-100s
really down to the $20 range?

!!!!!!!!!!!!

Further to my previous message....

What I usually do in the case of a blown power transformer is as follows.

If an exact replacement transformer is not available or affordable, I buy
a
good electrical replacement from Hammond or whomever. It is never a good
mechanical match, as we all know. Rather than hacking the chassis to
death,
I make up an adapter plate. I take a piece of flat steel (old computer
cases
are exactly the right thickness, and they're free) and drill two sets of
holes in it, one to match the original transformer, one to match the new
transformer. I then mount the adapter plate either above or below the
chassis using 8-32 hardware and spacers of the appropriate length. Next I
mount the transformer to the adapter and wire it up. This permits me to
use
the "wrong" transformer, but does no damage to the collector value in case
the "right" transformer comes along; I just remove the adapter plate.

Before you dumpster the R-100, send it to me. I'll give you the price of a
new transformer for it! The R-100, if I remember correctly, has only two
windings, 600VCT and 6.3 filament. Replacing the transformer as I describe
is an easy afternoon project! Radio Daze and AES both list suitable
replacement transformers.

Uncle Peter wrote:
"Edmund H. Ramm" wrote in message
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside. It should be
easy to find a replacement from a junker, even from another
brand, that would work though.

If it's just the HV winding, you can do the rewinding yourself. It won't
cost much, and it'll be fun.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

If you dig that deep into the tranny, mite as well rewind the primary as
well.

--
Regards,
Gary...WZ1M
"Scott Dorsey" wrote in message
...

Uncle Peter wrote:
"Edmund H. Ramm" wrote in message
In vC5Oe.1983$sw6.530@fed1read05 " Uncle Peter"
writes:
Instead of dumpstering etc., what is wrong with having a new
transformer wound?

Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside. It should be
easy to find a replacement from a junker, even from another
brand, that would work though.

If it's just the HV winding, you can do the rewinding yourself. It won't
cost much, and it'll be fun.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

"BFoelsch" wrote in message
...


Depends on the sentimental value. A rewound transformer would
buy TWO nice examples of the R-100 Stateside.

Yikes! I could buy a brand new standard transformer from Hammond for
$40 -$50. No, it wouldn't be original, but would it matter? Are R-100s
really down to the $20 range?

!!!!!!!!!!!!



Well, I may have overstated that. But, I see nice ones going in the
50 to 60 dollar range, and ones that would make good parts units
in the 20 dollar range on ePay.

But, most likely it was the linebypass caps as others noted, and
not the transformer.

Pete