Toshiba TV29C90 problem; Image fades to black...

[Ken Weitzel]

Bob Kos wrote:

esoroka@gmail.com> wrote in message
news:1117844049.979105.188200@g47g2000cwa.googlegroups.com...

Anybody know the difference between the words:
a) Refurbished
b) Reconditioned
c) Remanufactured
d) Rebuild


Thanks,
Eugene



Refurbished - an overused term that has come to define an item that is used
and tested operational at this time. It used to mean repaired at a factory
or ASP level after the item failed DOA or nearly new. Now the term applies
to anything that is used and happens to be still working and that proper
operation has been assured by the seller. It's all B.S.

Hi...

Darned spin-doctor talk. Hate it!!

Car dealers have "demos". Supposedly good. Really, really means
that it's been driven hard by various and sundry people who have no
vested interest in it at all. Worse than used.

Maybe the survivor folks could create a new reality show. Instead of
outwit, outlast, outplay it would be outlie, outcheat, outuse.

Rant over.

Ken

 

[kip]

You mean Pre_Owned...
Sounds better than USED

Car dealers have "demos". Supposedly good. Really, really means
that it's been driven hard by various and sundry people who have no
vested interest in it at all. Worse than used.

Maybe the survivor folks could create a new reality show. Instead of
outwit, outlast, outplay it would be outlie, outcheat, outuse.

Rant over.

Ken

 

[quietguy]

I think they have graduated to 'pre-loved' these days

David

kip wrote:

You mean Pre_Owned...
Sounds better than USED

Car dealers have "demos". Supposedly good. Really, really means
that it's been driven hard by various and sundry people who have no
vested interest in it at all. Worse than used.

Maybe the survivor folks could create a new reality show. Instead of
outwit, outlast, outplay it would be outlie, outcheat, outuse.

Rant over.

Ken

 

[Rono]

I'm an older (over 40 ) Electronics technician, & have found
it hard to make a reasonable living at times, over the last 22+
years, but I literally have spent thousands, & thousands of
hours "picking at" anything electronic, electric, & mechanical,
that's worth learning, & repairable, over that time, & now, I
can actually work on my own if I want. At times, I have had to.

Here's what I do: Repair three phase frequency drives, T.V.,
VCR, DVD, rear projection T.V., stereo, sun beds, computer,
monitors, even rebuild battery packs for cell phones, camcorders,
ac to dc power supplies, & laptops. Install ballasts for flourescent
light systems, buy from E-Bay, sell built laptops, computers (desktops).
Durabrand, Electrohome, Sansui, Prima, Advent, etc, etc. May not
always get parts, or be worth repair, but the customer will ALWAYS
come back. Also, sometimes "build" a test gadget for fellow Tech pals.

There's always something that nobody else with look at, especially
if it's "picked at", by a non technician. You have to put way too much
time into it to get back reasonable pay, but if you love it asa much as I
do, you WILL make it work. I wouldn't give it up for anything, or anyone.
I love it much more than the money. Rono.

 

[Arfa Daily]

"Rono" <rono@nl.rogers.com> wrote in message
news:K9mdnRf_vKJ3O6jeRVn-pg@rogers.com...

I'm an older (over 40 ) Electronics technician, & have found
it hard to make a reasonable living at times, over the last 22+
years, but I literally have spent thousands, & thousands of
hours "picking at" anything electronic, electric, & mechanical,
that's worth learning, & repairable, over that time, & now, I
can actually work on my own if I want. At times, I have had to.

Here's what I do: Repair three phase frequency drives, T.V.,
VCR, DVD, rear projection T.V., stereo, sun beds, computer,
monitors, even rebuild battery packs for cell phones, camcorders,
ac to dc power supplies, & laptops. Install ballasts for flourescent
light systems, buy from E-Bay, sell built laptops, computers (desktops).
Durabrand, Electrohome, Sansui, Prima, Advent, etc, etc. May not
always get parts, or be worth repair, but the customer will ALWAYS
come back. Also, sometimes "build" a test gadget for fellow Tech pals.

There's always something that nobody else with look at, especially
if it's "picked at", by a non technician. You have to put way too much
time into it to get back reasonable pay, but if you love it asa much as I
do, you WILL make it work. I wouldn't give it up for anything, or anyone.
I love it much more than the money. Rono.

But if you're clever about picking the RIGHT stuff to repair, Rono, you can
both love it and make a significant living from it. One thing that you're
never gonna make money at, is messing with stuff that's already been got at
by next door's second cousin's grandad, who used to mend radar in the war.
Get wise and turn that stuff away, and put the time to better use ...

Arfa

 

Hi Rono,You need to know time have change.What i can share my opinion
if you are
working as a freelance.
Industry repair: company will rather let the agent handle due to strong
backup in case
mess up the job.futher more most of the
electronic component like IC
are custom made for them, no way you can buy
from other than the
agent.
Home applicances: Do you know china is the world factory? an AA size
battery coat
only US$0.03 per pc.( ex-factory).a mini
radio with auto scan at US$0.25.& a remote toy car come with charger
cost US$1.00 only and they use SMT to make toy, they make motobike
costing by weigh per Kg per $. & some more.....So do you think you want
to repair them.hence no repair job. But trust me ,the day will come ,
china will become a sick man in asia cause no proper dispose of
industry waste,that is one of the reason why their product's are so
cheap.
Best Regards

 

[Tom Grayson]

Hey JackBruce
I got fed up with the crap the other posters wrote about your terminology,
and did not really see if anyone actually answered your question, Which, by
the way, Was very easy to understand. Ignore the other jackasses here, that
nitpick. They have too much time on their hands, i can see.

Question 1
The impedance of inductors and reactors is based on the varying signal
frequency, Weather it is offset by the DC component or not.
This answer assumes that you are not reaching the current limit of any of
the devices, naturally if the DC Current in the "L" Device saturates the
Flux medium ( air or iron) then you will get non linearities introduced,
Not sure what the limit on a "C" Device would be, probably current again.

Question 2
The link didn't work but most of the modern devices looking for peaks and
valleys work fine with a DC Offset.

Tom Grayson

<jackbruce9999@yahoo.com> wrote in message
news:1118440502.677562.89730@g43g2000cwa.googlegroups.com...

2 questions about a fully DC Sine Wave....let's suppose you have a DC
Sine wave which varies from +5V to +15V peak-to-peak going into a load
with R, L, and C components.....

Question #1:
Is the load's impedance a function of R, L, and C (and wave frequency)
or is it simply just R (i.e. Z=R)? In other words does non-resistive
impedance (L + C) really only matter with an AC signal OR anytime
voltage varies periodically (even if it is all DC)?


Question #2:
Would a "regular" negative peak detector ciruit, like shown here:


http://www.elektroda.net/cir/index/Detector%20Circuits/NEGATIVE%20PEAK%20DETECTOR.htmgative


work for the DC Wave described? Will it output +5V or do negative peak
detectors only work for AC signals?

Thank you.

 

[fosjef67]

The TV had been making an arc sound for quite some time when the set
was cold, however everything still worked fine. Which leads me to
believe that the HV splitter was having some issues? However now
while doing some test I fine that I don't even have power going to
the HV transformer. The only place I can seem to fine any juice in
the system is on main board to the right of the set (if looking in
from the rear). If anyone could make any suggestions I would
appreciate it. It is a classic case of worked one day and not the
next

 

[kip]

Ok its a CTC169...
You will have to rebuild the SMPS section ...First 2.2mfd 22mfd 39mf
Then whilst in standby mode check voltages....+15Von cr4118
Then ...134V on HOT collector
If OK fine..
If not rebuild Horizontal Out section HOT/Blue Box caps etc..
Whilst in there replace HV Block..

kip
"fosjef67" <jeffrey.d.foster@us.army-dot-mil.no-spam.invalid> wrote in
message news:Kkd%e.23042$zZ.11764@fe04.news.easynews.com...

The TV had been making an arc sound for quite some time when the set
was cold, however everything still worked fine. Which leads me to
believe that the HV splitter was having some issues? However now
while doing some test I fine that I don't even have power going to
the HV transformer. The only place I can seem to fine any juice in
the system is on main board to the right of the set (if looking in
from the rear). If anyone could make any suggestions I would
appreciate it. It is a classic case of worked one day and not the
next

 

[Art]

Maybe even the pcc diode and associated cap?
"kip" <nospam@nospam.com> wrote in message
news:newscache$613nni$ish$1@newsfeed.niagara.com...

Ok its a CTC169...
You will have to rebuild the SMPS section ...First 2.2mfd 22mfd 39mf
Then whilst in standby mode check voltages....+15Von cr4118
Then ...134V on HOT collector
If OK fine..
If not rebuild Horizontal Out section HOT/Blue Box caps etc..
Whilst in there replace HV Block..

kip
"fosjef67" <jeffrey.d.foster@us.army-dot-mil.no-spam.invalid> wrote in
message news:Kkd%e.23042$zZ.11764@fe04.news.easynews.com...
The TV had been making an arc sound for quite some time when the set
was cold, however everything still worked fine. Which leads me to
believe that the HV splitter was having some issues? However now
while doing some test I fine that I don't even have power going to
the HV transformer. The only place I can seem to fine any juice in
the system is on main board to the right of the set (if looking in
from the rear). If anyone could make any suggestions I would
appreciate it. It is a classic case of worked one day and not the
next

 

[Brad]

Hi,

I had thought of that, but I wanted to scope it to confirm.

I returned the set to the customer because I declined to work on it due to
the difficulty of scoping the board out of the holder, which supports the VCR.
I REALLY wanted to know for the future, if there is a way to service a combo
without the VCR attached?

Brad

On Tue, 4 Oct 2005 06:39:00 -0600, in sci.electronics.repair you wrote:

>Replace the YC jungle chip

 

[freeheadspins]

I have teh very same problem. At first when this problem started, I could
unplug the unit and let it "rest" for a few minutes and then it would be
OK for a few days. Now nothing will fix it. I get no power-up and it
just says "Auto" in the desplay. It would not even eject last time I
tried it. I had to physically stand the unit on end and shake it to get
the tape out. Did you ever find and answer?
freeheadspins westernskys@gmail.com

 

[Danny]

I've just noticed this 'long' thread. It is of interest to me as I had
a not dissimilar problem. The use of superposition is absolutely
correct in a linear system where the system component values do not
vary with the signal applies. However, when applying the ac component
the skin effect phenomenon will deplete the current carrying carriers
from the centre of the conductive component thus reducing the effective
cross sectional area......which will also effect the dc
resistance....or will it?

Danny

 

[Reg Edwards]

"Danny" <dindyk@energy.com.au> wrote in message
news:1128551665.200359.9440@g14g2000cwa.googlegroups.com...

I've just noticed this 'long' thread. It is of interest to me as I
had
a not dissimilar problem. The use of superposition is absolutely
correct in a linear system where the system component values do not
vary with the signal applies. However, when applying the ac
component
the skin effect phenomenon will deplete the current carrying
carriers
from the centre of the conductive component thus reducing the
effective
cross sectional area......which will also effect the dc
resistance....or will it?

Danny

========================================

No, it won't. However, it does appear have affected superposition of
your thinking processes. ;o)
----
Reg.

 

On 10/5/05 3:34 PM, in article
1128551665.200359.9440@g14g2000cwa.googlegroups.com, "Danny"
<dindyk@energy.com.au> wrote:

I've just noticed this 'long' thread. It is of interest to me as I had
a not dissimilar problem. The use of superposition is absolutely
correct in a linear system where the system component values do not
vary with the signal applies. However, when applying the ac component
the skin effect phenomenon will deplete the current carrying carriers
from the centre of the conductive component thus reducing the effective
cross sectional area......which will also effect the dc
resistance....or will it?

Danny

It will not. Each frequency component will work independently of others.

The modification of resistance by heating is a nonlinear effect that will
couple different frequencies.

Bill

 

[Art]

Probably not since the system control checks for the mechanical position of
the loading arms, etc at post.
"Brad" <bpetria@verizon.net> wrote in message
news:4343bee8.1256738@news.bellatlantic.net...

Hi,

I had thought of that, but I wanted to scope it to confirm.

I returned the set to the customer because I declined to work on it due
to
the difficulty of scoping the board out of the holder, which supports the
VCR.
I REALLY wanted to know for the future, if there is a way to service a
combo
without the VCR attached?

Brad

On Tue, 4 Oct 2005 06:39:00 -0600, in sci.electronics.repair you wrote:

Replace the YC jungle chip

 

[JVF]

Ray Wrote:

Art,
The screen was tilted forward so all of the light from the tubes
was aimed directly at the viewers who were expected to be sitting
down.
The screens were very highly reflective (and easily damaged) because
the tubes were not as bright (not liquid cooled) as todays projectors.
The screen was mounted onto the back of the projector on two large
metal arms.
I don't think you could converge it if the screen were wall
mounted unless the distance to the tubes was close to the same as the
original cabinet mounting. Used to work on those beauties and the
larger six foot KP-7200.

Ray
--

My return addy is munged. To reply, remove the zeroes.

Hello Ray

Can you answer a question about the KP-5020 versus the KP-7220?

Are they the same set internally, with the only difference being the
screen size and the distance away from the screen?


--
JVF

 

[Yde]

<NOSPAM> schreef in bericht
news:deedncvEX9738NDenZ2dnUVZ8qudnZ2d@scarlet.biz...

It's probably the micro switch not detecting the MiniDisc:
http://members.tripod.com/~snnake11/

Jos

"Yde" <y.vdzwaag@chello.nl> schreef in bericht
news:43eec$434c1af3$50395ac7$22424@news.chello.nl...
Hello,

I've bought a goodlooking second-hand mds-501. The minidisk has one
problem. When starting for the first time the unit won't accept the disc.
The disc starts turning but the laserunit does not move.
I've to place it vertical on the side of the powerbutton. When he
recognices it I can place it horizontal again. After playing or recording
the first minidisk the problem seems to be over. I can play or record for
hours without a problem but the next day the problem is back.
Problems with a switch?? Heath problem. (when the unit is warm after a
while it works perfectly )
Any suggestions??

Thanks in advance. Yde

Thanks for your reply. But the minidisc is detected. The disc starts

spinning but the laser doesn't move a litlle, what he does when succeeding
reading the TOC.
Only when the machine is cold he refuges to read the disc. Later on it works
perfectly.
I've treated the switch beside the laserunit with kontaktspray. I've cleaned
the laser. But nothing works. The only thing I can think of is that the
laser has not got the right temperature at the start.
More suggestions?

Thanks

Yde
The Netherlands

 

[Mark D. Zacharias]

"Yde" <y.vdzwaag@chello.nl> wrote in message
news:341f3$434d7da6$50395ac7$23666@news.chello.nl...

NOSPAM> schreef in bericht
news:deedncvEX9738NDenZ2dnUVZ8qudnZ2d@scarlet.biz...
It's probably the micro switch not detecting the MiniDisc:
http://members.tripod.com/~snnake11/

Jos

"Yde" <y.vdzwaag@chello.nl> schreef in bericht
news:43eec$434c1af3$50395ac7$22424@news.chello.nl...
Hello,

I've bought a goodlooking second-hand mds-501. The minidisk has one
problem. When starting for the first time the unit won't accept the
disc. The disc starts turning but the laserunit does not move.
I've to place it vertical on the side of the powerbutton. When he
recognices it I can place it horizontal again. After playing or
recording the first minidisk the problem seems to be over. I can play or
record for hours without a problem but the next day the problem is back.
Problems with a switch?? Heath problem. (when the unit is warm after a
while it works perfectly )
Any suggestions??

Thanks in advance. Yde

Thanks for your reply. But the minidisc is detected. The disc starts
spinning but the laser doesn't move a litlle, what he does when succeeding
reading the TOC.
Only when the machine is cold he refuges to read the disc. Later on it
works perfectly.
I've treated the switch beside the laserunit with kontaktspray. I've
cleaned the laser. But nothing works. The only thing I can think of is
that the laser has not got the right temperature at the start.
More suggestions?

Thanks

Yde
The Netherlands

Just to be clear. Is this a 510 (MDS-JE510) or a 501 (which I haven't heard
of)?

Mark Z.

 

[Yde]

"Mark D. Zacharias" <spammenot@nonsense.net> schreef in bericht
newsBr3f.867$dO2.330@newssvr29.news.prodigy.net...

"Yde" <y.vdzwaag@chello.nl> wrote in message
news:341f3$434d7da6$50395ac7$23666@news.chello.nl...

NOSPAM> schreef in bericht
news:deedncvEX9738NDenZ2dnUVZ8qudnZ2d@scarlet.biz...
It's probably the micro switch not detecting the MiniDisc:
http://members.tripod.com/~snnake11/

Jos

"Yde" <y.vdzwaag@chello.nl> schreef in bericht
news:43eec$434c1af3$50395ac7$22424@news.chello.nl...
Hello,

I've bought a goodlooking second-hand mds-501. The minidisk has one
problem. When starting for the first time the unit won't accept the
disc. The disc starts turning but the laserunit does not move.
I've to place it vertical on the side of the powerbutton. When he
recognices it I can place it horizontal again. After playing or
recording the first minidisk the problem seems to be over. I can play
or record for hours without a problem but the next day the problem is
back.
Problems with a switch?? Heath problem. (when the unit is warm after a
while it works perfectly )
Any suggestions??

Thanks in advance. Yde

Thanks for your reply. But the minidisc is detected. The disc starts
spinning but the laser doesn't move a litlle, what he does when
succeeding reading the TOC.
Only when the machine is cold he refuges to read the disc. Later on it
works perfectly.
I've treated the switch beside the laserunit with kontaktspray. I've
cleaned the laser. But nothing works. The only thing I can think of is
that the laser has not got the right temperature at the start.
More suggestions?

Thanks

Yde
The Netherlands




Just to be clear. Is this a 510 (MDS-JE510) or a 501 (which I haven't
heard of)?

Mark Z.

It's a MDS-501. This was the second minidiskrecorder from Sony. It was the
follow-up of the MDS-101.
This recorder is better build and more reliable than the MDS-JE series.
It was the first high-end minidisk.

Yde