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

[Lisbeth og Knud Schøler]

Hi,

I have a Sony TA-F235R integrated amplifier. It seems that the transformer
has died. Is there anyone who can tell me wich secondary voltages are used
in this amp?

In a perfect world somebody had a copy of the schematics or servicemanual he
could e-mail me.

tia
Knud

e-mail [email protected] (remove skip from adress when replying)

 

[Tom MacIntyre]

Hi,

I have a Sony TA-F235R integrated amplifier. It seems that the transformer
has died. Is there anyone who can tell me wich secondary voltages are used
in this amp?

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

Tom

 

[Lisbeth og Knud Schøler]

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

Tom

<SNIP>

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

Knud

 

[Lisbeth og Knud Schøler]

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

Tom

Maybe its some sort of internal thermal fuse ?

Knud

 

[Tom MacIntyre]

Maybe its some sort of internal thermal fuse ?

Knud

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

Tom

 

[Rono]

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.

 

[Arfa Daily]

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

Tom

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

 

[Rono]

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.

 

[Mark D. Zacharias]

Hi,

I have a Sony TA-F235R integrated amplifier. It seems that the transformer
has died. Is there anyone who can tell me wich secondary voltages are used
in this amp?

In a perfect world somebody had a copy of the schematics or servicemanual
he could e-mail me.

tia
Knud

e-mail [email protected] (remove skip from adress when replying)

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:

[email protected]

and reverse the domain name.


Mark Z.

 

[peta777]

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

You can mail me direct at:

[email protected]

and reverse the domain name.


Mark Z.
--------------------------------------------------------------
I need tech. documents for Sony TA-F235R --- You can send m
([email protected]) copy of the schematics or servicemanual for SON
TA-F235R ?

THANK