Ronald wrote:
On Mar 9, 8:05 am, "Mark D. Zacharias" wrote:
Ronald wrote:
On Mar 2, 6:08 am, "Mark D. Zacharias"
wrote:
Ronald wrote:
With your help we found the short. it in two switching chips... I
need some help locating them.

Toshiba TC9273N-004 and TC9273N-013 these both got real warm
and one let out a puff of smoke so we nailed it.

Thanks for all your help if you have any insites... let me know

-Ron

snip.

Get the IC numbers off the board and you can get order them from
Andrews Electronics. Their number is 800-289-0300.

Also, I have seen the TC9273N-004 from Onkyo cheaper. Not sure
about the other. Their number is 800-229-1687. They can look up the
generic Toshiba numbers you gave - at least they've been able to
when I called on one before...

Mark Z.
Got my replacement parts in no dice. One gets real warm. I'm
thinking this amp is screwed. I've only put about 30 bucks in parts
into it. I have no clue what else to look for.

-Ron

I don't think those chips get warm normally. Could be one of the
plus or minus 15 volt lines is high. You could still have a blown
channel, or a bad voltage amp IC...

Mark Z.- Hide quoted text -

- Show quoted text -

Now when I put the new chips in, I unsoldered the amp transistors all
of them. I can unsolder the zig zag'd ic's I had to replace one of
these in my other receiver that had a protection issue. the -15 volt
line seems stable its not warm. the +15 line is hot to the touch.
But not scolding hot like it was before. its about the same temp as
the -15. i can go though and unsolder the ic amps and the transistors
amps, and unplug the bias's. One thing odd that I noticed. when I
plug in the tuner module the amp goes into protection mode right
away. I happen to have an extra module. plugged that in and got the
same results. Now with these replacement chips I got the Toshiba
TC9273N-004 and TC9273N-013 I found a toshiba tc9273n-007 this is
what I replaced them with assuming the pinouts are the same. my guess
is they aren't . I don't know where to get some information on
these. I can order the 'correct' chips from andrews like you
recommend. But thats what I have done so far. Mark I appricate all
your help! Most people would stop and not bother to help. You
stick around. Thanks for that bud!

-Ron

The tc9273n-007 would not be interchangeable. These chips are pretty
special.

mz