Sony TA-F235R Seconday voltages of transformer ??? Schematics wanted

That's rare, I think. What resistance measurements do you get on the primary and secondaries?

Tom

Primary has no reading - that is infinite Secondaries (there are 2) seems to be somewhere in the region of 4-12 ohms.

Knud

Maybe its some sort of internal thermal fuse ?

Knud

Likely...I think those are repairable in some cases.

Tom

If you have no secondaries at all, especially raw AC on the main power transformer (some units have a second cotrol transformer), the primary may be open, & it is NOT infinity, it's low, but make sure the mechanical switch is on. If the transformer is open primary, sometimes you can repair it, even without opening it up, depending on which unit it is. There may be an extra winding you could use. Hope this helps, Rono.

But not many, and unfortunately never, in my experience, with Sony kit. The failure for no apparent reason, of transformer thermal fuses, seems to be getting more and more common. I think a lot of it may be to do with owners putting all of their lounge equipment in one fancy cabinet with a glass door ...

Arfa

If you have no secondaries at all, especially raw AC on the main power transformer (some units have a second cotrol transformer), the primary may be open, & it is NOT infinity, it's low, but make sure the mechanical switch is on. If the transformer is open primary, sometimes you can repair it, even without opening it up, depending on which unit it is. There may be an extra winding you could use. Hope this helps, Rono.

The Main DC rails are rated at + and - 32.4 volts.

The service manual is about 5.5 meg if you can take an attachment that size.

You can mail me direct at:

snipped-for-privacy@labolgcbs.net

and reverse the domain name.

Mark Z.

The service manual is about 5.5 meg if you can take an attachment that size.

You can mail me direct at:

snipped-for-privacy@labolgcbs.net

and reverse the domain name.

Mark Z.

-------------------------------------------------------------- I need tech. documents for Sony TA-F235R --- You can send me ( snipped-for-privacy@quick.cz) copy of the schematics or servicemanual for SONY TA-F235R ?

THANKS