Sony 13" KV-1370R F-Conn broken capacitor ...

[Dave]

Greetings,

I have a Sony KV1370R that is coming up on it's 20th year of service. The
set works fine except that recently it "jumped" off of the table and the
Capacitor in Series with the UHF input was destroyed when the bulkhead
mounted F-Connector was ripped out of the back of the set.

The capacitor is mounted inside a small metal enclosure that the F-Connector
was mounted to. The capacitor was soldered in series with the center
conductor of the coax cable. The small metal enclosure (about 1" cube) has
a 6" coax lead with an RCA plug that goes to the RF circuits (enclosed in
another metal box on the main board).

My question is this...
can someone help me identify and locate a replacement either for the entire
"little box with cap and 6" cable to RCA plug" RF Entry assembly or just the
capacitor inside the little box?

Here are the details:
"little box with cap and 6" cable to RCA plug" RF Entry assembly:
1-536-591-41
J 5 1
muRata Made in Japan
ML2 UR
CM10 C182Z
R2-4M
125VAC 59

The Series Capacitor:
it appears to be a ceramic disc capacitor and is about 1cm in diameter
markings on one side only appear to be house markings ...

ME
CM4 C131
R2.5-4M
125VAC 58
UR
The cap was pretty much destroyed in the fall so it is unlikely I could take
it to work and simply measure it.

If anyone has any information where I can find new/used/salvaged "RF entry
Assembly". what the likely values/specs for the capacitor are so I can
secure a replacement part from Radio Shack or Frys.

Any assistance I can get to help this old but great set back on her feet
would be greatly appreciated.

Thanks,
Dave

 

[Mark D. Zacharias]

This is a critically important safety part. This isolation block provides
isolation between the AC line and the "HOT" chassis of the set. The original
part is discontinued, but similar parts can be found in catalogs such as MCM
Electronics. Just be sure you get one with a cable long enough to reach your
tuner pack.
DO NOT try to hook up to any external antenna or cable until this is
properly repaired.

Mark Z.

 

[Dave]

Greetings Mark,

Good point about the isolation requirements. It's been a while since I
worked on line powered consumer gear (particularly a TV with the whole hot
chassis "feature").

I recognize the 125VAC rating in the markings. So are there other
specifications I should try to match? Is there a frequency rating built
into the numbers that I should look for when I hit the parts shop?

Thanks,
Dave

 

[James Sweet]

Greetings Mark,

Good point about the isolation requirements. It's been a while since I
worked on line powered consumer gear (particularly a TV with the whole hot
chassis "feature").

I recognize the 125VAC rating in the markings. So are there other
specifications I should try to match? Is there a frequency rating built
into the numbers that I should look for when I hit the parts shop?

Thanks,
Dave

The actual specs on the isolation block are not critical, remember that all
TV's are made to take the same frequencies in, just look in MCM or other
catalog and get something similar, it should work fine.

 

[Jason D.]

Greetings Mark,

Good point about the isolation requirements. It's been a while since I
worked on line powered consumer gear (particularly a TV with the whole hot
chassis "feature").

I recognize the 125VAC rating in the markings. So are there other
specifications I should try to match? Is there a frequency rating built
into the numbers that I should look for when I hit the parts shop?

Thanks,
Dave

Go to few tv shops and ask for this isolated RF part from their junked
stuff, this is same function found in many hot chassis TVs. I usually
replace one from junked tvs. Does same job.

Note that there is two sizes of this RCA connector. Small or normal.

Cheers,

Wizard

 

[Mark D. Zacharias]

What he said.

The actual specs on the isolation block are not critical, remember that all
TV's are made to take the same frequencies in, just look in MCM or other
catalog and get something similar, it should work fine.

mz

 

[pctech420]

Dave,
Are you still looking for this
ML2 UR CM10 C182Z R2-4M 125VAC 1 2, I believe I have excactly what you are
looking. I was about to put it up for auction, when I saw you post. I have
Picture I can email you, Lemme know before I put it on ebay.......

pctech420