Re: zenith t.v. model # pv4655lk9

"dkuhajda@xxxxxxxx" <dkuhajda@xxxxxxxx> wrote in
news:1122698486.082774.283280@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

> Whoa, wait a minute. You are poking around a tv set and cannot
> identify the horizontal output transistor?

Being able to 'guess' which one it is and knowing are two different things.

> Please pick up any book on tv repair (post 1985) and do a good quick
> reading before you go any further. People here can help, if you have
> some basic understanding of what you are looking at inside the tv set.

I have 'some idea' of the basics, Texas Electronics Association Certified
Electronic Technican #TEX-173 in audio, radio-TV and industrial electronics.
I used to have an fcc 1st phone and 2nd telegraph license w/ radar
endorsement. I owned a shop in Texas in the early 70s.
TVs have changed a bit since I was working on them every day.

> www.repairfaq.org might also be of some use. I am sure any community
> college library that offers vocational electronics will have one
> available.

I will check.

>
> The module number that is on the board starts with a 009-xxxxx-xx
> number and is usually on a label somewhere near the system controller
> ic.

Will look again.

> In case you cannot find the module number, download z-tips here:
> http://orpheuscomputing.com/technicians/tech_downloads.html and look up
> the model number.

Some interesting information:
C8 chassis
service manual CM-145
9-1270-02 HOR/VERT Sweep & SMPS

> There may even be some specific tips for that
> chassis.

a few. No pictures so far.

C8-L series [no idea which series I have, yet]

location TX3204 (95-4134-09)
REPLACE FLYBACK WITH PART# 95-4134-11. PARTS INFORMATION SHOWS REPLACEMENT TO
BE A -10. THIS IS WRONG.

> It might be cost/time effective to send the module out to PTS for them
> to repair it. At least check on the price. Sometimes on the older
> Zenith modules with limited parts availability, they are the least
> troublesome way to get the tv repaired.
>
> One thing that comes to mind is the pin and horizontal shaping coils,
> as I remember one of those commonly goes bad in that set and takes out
> several other parts.

The set was working normally one moment and the picture disappeared.
Sound still ok. No HV, no raster, the 2 amp fuse blown. Replacement blows
immediately.

Thanks for the info.


--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+sp@xxxxxxxxxxxxxxxxxxxx remove ch100-5 to avoid spam trap
.

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