Mike wrote:
I have been tinkering with a Heath SB 610 Monitor Scope with the
apparently fairly common problem of a Blown Power Transformer.
I read somewhere of people using an "outboard" transformer to work
around this problem. So, which winding is it that blows: the 215 VAC
or the 600 VAC. And can one just disconnect the blown winding and
connect the additional transformer at the appropriate point? Thanks
for any info.

I worked for some time trying to replace a defective transformer in one
of these units. Since I could never find a suitable replacement trans.
I attempted to use two transformers to make up the necessary
voltages..Not enough room, I gave up as a hopeless case.. The original
transformer was so small,winding (wire size) was so small,they opened
up after 20/30 years.Usually the 600 v winding goes out.. Good Luck 73
W4PQW

I have four of these in the shop waiting to be rewound. All have the same
problem, high voltage winding burnt.
Regards,
Gary...WZ1M
wrote in message
oups.com...

Mike wrote:
I have been tinkering with a Heath SB 610 Monitor Scope with the
apparently fairly common problem of a Blown Power Transformer.
I read somewhere of people using an "outboard" transformer to work
around this problem. So, which winding is it that blows: the 215 VAC
or the 600 VAC. And can one just disconnect the blown winding and
connect the additional transformer at the appropriate point? Thanks
for any info.

I worked for some time trying to replace a defective transformer in one
of these units. Since I could never find a suitable replacement trans.
I attempted to use two transformers to make up the necessary
voltages..Not enough room, I gave up as a hopeless case.. The original
transformer was so small,winding (wire size) was so small,they opened
up after 20/30 years.Usually the 600 v winding goes out.. Good Luck 73
W4PQW

In article .com,
wrote:

I worked for some time trying to replace a defective transformer in one
of these units. Since I could never find a suitable replacement trans.
I attempted to use two transformers to make up the necessary
voltages..Not enough room, I gave up as a hopeless case.. The original
transformer was so small,winding (wire size) was so small,they opened
up after 20/30 years.Usually the 600 v winding goes out.. Good Luck 73
W4PQW

I believe Hammond now makes an appropriate replacement transformer. Yes,
the power transformer is blown on a _lot_ of old Heath scopes. For the
cost of a Hammond, though, you can get a nice Tektronix at a hamfest.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."