Finding a good, honest TV repairman

[Jumpster Jiver]

This sounds like a capacitor in the vertical/frame circuit. Should be
an easy fix and a part costing cents - but given the size of the set,
I imagine that taking it somewhere is tricky. A call out will be
prohibitive, cost-wise. So I suggest you have a go - do you have a
soldering iron and som e solder? (available in a hardware/hobby store
I imagine). if you can post some pics of the main pcb , we can guide
you to the likely problem area. It would be a pity, and wasteful, to
dump an otherwise working set....
-b

That was the most useful reply to the OP

 

[aemeijers]

Jumpster Jiver wrote:

They don't repair them any more, the replace the board which costs more
than the whole unit. Throw it off a bridge and buy a new one.

What is this guy talking about? CRT TVs are repaired by tracking down
and replacing faulty components, not the whole (unavailable) board.
20-30 years ago, maybe. Most consumer electronics from the last couple

of decades, the components are wave-soldered, purpose-built, and
unlabeled, other than on the circuit diagram in the manual you can't
get. Around here, bench fee at an electronics shop is fifty bucks to
bring it in the door. I think the nearest one is in the next county- the
local guy couldn't make his rent.

Have to do a cost-benefits analysis. Take how many years you expect it
to live, post-repair, and compare that against cost of a similar new
one. In almost all cases, home TVs count as disposable, if they are over
2-3 years old.

I'm a cheap SOB, so I'll open stuff up and look for any obvious stuff
like a popped fuse, or mouse piss on a circuit board that a little spray
cleaner will solve, or maybe a cold solder joint on a power lead. But
any evidence of fried components, life is too short.

--
aem sends...

 

[PeterD]

On Sat, 16 Jan 2010 23:41:04 -0500, "Jumpster Jiver" <no reply> wrote:

They don't repair them any more, the replace the board which costs more
than the whole unit. Throw it off a bridge and buy a new one.

What is this guy talking about? CRT TVs are repaired by tracking down and
replacing faulty components, not the whole (unavailable) board.

Yea, if you say so...

Anything is fixable, IF you want to spend a lot of money. As far as
cost effective, I don't think so. Component level diagnostics and
replacement is not exactly quick and easy.

 

[Jim Yanik]

PeterD <peter2@hipson.net> wrote in
news:7e96l5hh55pu5m0075uq0h04onrv1fa909@4ax.com:

On Sat, 16 Jan 2010 23:41:04 -0500, "Jumpster Jiver" <no reply> wrote:



They don't repair them any more, the replace the board which costs
more than the whole unit. Throw it off a bridge and buy a new one.

What is this guy talking about? CRT TVs are repaired by tracking down
and replacing faulty components, not the whole (unavailable) board.

Yea, if you say so...

Anything is fixable, IF you want to spend a lot of money.

a lot of time. (= money)

As far as
cost effective, I don't think so. Component level diagnostics and
replacement is not exactly quick and easy.

Heh,I built a TEK 2213 o'scope from boards that other TEK techs replaced
because they couldn't find the problems on them.Got a free grade-B CRT from
the head of CRT Manufacturing,and only had to buy $20 worth of parts to
complete it.($20 after my TEK discount!)

--
Jim Yanik
jyanik
at
localnet
dot com

 

[krw]

On Sun, 17 Jan 2010 16:10:14 -0800 (PST), b
<reverend_rogers@yahoo.com> wrote:

On 17 ene, 14:43, aemeijers <aemeij...@att.net> wrote:


20-30 years ago, maybe. Most consumer electronics from the last couple
of decades, the components are wave-soldered, purpose-built, and
unlabeled, other than on the circuit diagram in the manual you can't
get.

'purpose built and unlabelled' components? what does that mean? In
fact, I suspect it means nothing as it is gibberish, although I
imagine most components are 'purpose built' for something - resistors
for providing resistance for one. Hate to tell you, but that's been
going on a lot longer than 2 decades!

Custom ASICs and components with their labels either removed or with
the box manufacturer's part numbers. If you've been around that long
and haven't seen these, you're blind.

As for unlabelled, I'd love to know what kind of 'unlabelled' gear
I've been missing these last two decades. Those of us who work on
these items daily can identify the components by reading those cute
little coloured stripes or printed text on them. If need be (for
example if a component is destroyed) we even sometimes look for the
component reference off the pcb, and consult the schematic. You know,
you can even find lots and lots of them for free on sites like
eserviceinfo.com. Try it one day.

I'd like you to point out these "colored stripes" on SMT devices
(almost everything is, anymore). Most SMT devices, particularly
capacitors aren't marked with value. If you can find a schematic
*maybe* it'll help.

 

[b]

On 17 ene, 14:43, aemeijers <aemeij...@att.net> wrote:

20-30 years ago, maybe. Most consumer electronics from the last couple
of decades, the components are wave-soldered, purpose-built, and
unlabeled, other than on the circuit diagram in the manual you can't
get.

'purpose built and unlabelled' components? what does that mean? In
fact, I suspect it means nothing as it is gibberish, although I
imagine most components are 'purpose built' for something - resistors
for providing resistance for one. Hate to tell you, but that's been
going on a lot longer than 2 decades!

As for unlabelled, I'd love to know what kind of 'unlabelled' gear
I've been missing these last two decades. Those of us who work on
these items daily can identify the components by reading those cute
little coloured stripes or printed text on them. If need be (for
example if a component is destroyed) we even sometimes look for the
component reference off the pcb, and consult the schematic. You know,
you can even find lots and lots of them for free on sites like
eserviceinfo.com. Try it one day.
-B

 

[whit3rd]

On Jan 17, 4:10 pm, b <reverend_rog...@yahoo.com> wrote:

On 17 ene, 14:43, aemeijers <aemeij...@att.net> wrote:



20-30 years ago, maybe. Most consumer electronics from the last couple
of decades, the components are wave-soldered, purpose-built, and
unlabeled, other than on the circuit diagram in the manual you can't
get.

'purpose built and unlabelled' components? what does that mean?

It means 'jungle chip' components that were only produced for a few
months during one production run for a plant in Singapore, or power
packages with undocumented innards (maybe a Darlington and some
bias resistors, or maybe something else). Or it means little surface
mount chip components, with no printable surface for writing on.
Diode? Zener? Varactor? Fuse? Who can tell?

It also means programmed chips (PIC or PAL, gate arrays, or SOC
microprocessors). Anything you can swap for a known-good part
gives, at least in principle, a repair option. On a 'modern' consumer
item, there's lots of no-repair-option components. Even if you KNOW
it's a bad flyback, maybe the only thing you can do is order a full
deflection
board (about $400 for an old Apple iMac). When the gizmo turns
six years old, maybe you can't even get the $400 part.

 

[Leonard Caillouet]

"aemeijers" <aemeijers@att.net> wrote in message
news:SrSdnQbYn7uEic7WnZ2dnUVZ_tydnZ2d@giganews.com...

Jumpster Jiver wrote:


They don't repair them any more, the replace the board which costs more
than the whole unit. Throw it off a bridge and buy a new one.

What is this guy talking about? CRT TVs are repaired by tracking down
and replacing faulty components, not the whole (unavailable) board.
20-30 years ago, maybe. Most consumer electronics from the last couple of
decades, the components are wave-soldered, purpose-built, and unlabeled,
other than on the circuit diagram in the manual you can't get. Around
here, bench fee at an electronics shop is fifty bucks to bring it in the
door. I think the nearest one is in the next county- the local guy
couldn't make his rent.

Have to do a cost-benefits analysis. Take how many years you expect it to
live, post-repair, and compare that against cost of a similar new one. In
almost all cases, home TVs count as disposable, if they are over 2-3 years
old.

I'm a cheap SOB, so I'll open stuff up and look for any obvious stuff like
a popped fuse, or mouse piss on a circuit board that a little spray
cleaner will solve, or maybe a cold solder joint on a power lead. But any
evidence of fried components, life is too short.

--
aem sends...

This is nonsense, from someone who has no idea what he is talking about.
This set likely has a rather trivial problem in the vertical output stage
that we repair at the component level all the time for around $100.

Leonard