Toshiba TV29C90 problem; Image fades to black...

List the diagnostic tests you have already done or take it to a service
facility.
<dkuhajda@locl.net> wrote in message
news:1112583189.495384.74410@f14g2000cwb.googlegroups.com...
Too many to list. Do a google groups search for ctc169 and start there.
Power supply, hv splitter, h-output caps/diodes, etc.
 
Helpful info:

Brand, model, age of the unit.

A blown fuse should be readily visible to the naked eye.

Unplug it before changing, and only use the same value fuse.

Mark Z.


<wizzzer@hotmail.com> wrote in message
news:1112600093.332402.41030@z14g2000cwz.googlegroups.com...
There was a partial black out tonight. The lights got very dim for
about an hour. The VCR was recording when it happened and it stayed on
at the reduced energy level. Then when the electricity came back to
full power, the VCR died. It has no power at all. Do you think it blew
a fuse?
 
vile5@comcast.net wrote:
I dont remember the make or model, just a general question about
repairing a tv that is blinking. The clear picture goes into a black
screen for a full sec then comes back. Repeats every 5 mins or so.
Any thoughts? The tv is about a 27 in tv bought back in the early 90's
is the only detail for now that is constantly used.

Thanks in advance.
I think it's your brain that's blinking.
 
"Jana" <jana@ca.inter.net> writes:

You should always mention the make and model number of your TV set when
posting.

Generally speaking, it sounds like the CRT is most likely defective. CRT
replacement in a typical TV set, or computer monitor, generally costs more
than a new unit.
Could very well be something other than the picture tube.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
contact me via the Feedback Form in the FAQs.

"Lanzar" <christian.loo@netikka.fi> wrote in message
news:677fafc5.0503311238.6929d6cc@posting.google.com...
I have a television with a strange problem. When i start the tv it
takes about 10-15 seconds before the picure appears. And also the red
color is missing, so the piture is bluegreen (but no lines). And then
after about a half minute red fields starts flashing across the
screen, and then it turnes off. Any idea what cause this?
 
Yep as others have said

the fuser or the PSU cap = service 50

You can check the fuser bulb with a meter should read 20-30 ohms


Ref the counter and all that crap... thats on the larger range of Laserjets
ie laserjet 5si.. laserjet 8000 etc

Regards Cub

"Stefan Toftevall" <stefan.toftevall@bredband.net> wrote in message
news:c4f805eb.0504030644.5cc36e3a@posting.google.com...
Hi everyone,
My good old laserprinter suddenly refuse to print with the display
showing: "50-Needs service". Anyone know what is wrong?
I heard somebody say it has got an internal counter, and after a
certain amount of printouts, it display this message though it must
not be anything wrong. The counter needs reseting in some way.
Anyhow, any advice is appreciated,
Regards, Stefan
 
TV is 20 years old get a new one or forget about the clock.



<gcotterl@co.riverside.ca.us> wrote in message
news:1112322963.316093.327350@g14g2000cwa.googlegroups.com...
I have an old (mid-1980's) RCA Colortrak 2000 TV.

I operate the TV -- using a remote-control or using the buttons on the
front panel of the TV set -- the time is displayed on the TV screen.

When I set the TV-time to match the real-time (for example, 2 PM), five
hours later (at 7 PM real-time), the TV-time is 9 PM.

How can I get the TV-time to stay the same as the real-time?
Is the clock a part of the TV or is it in the remote-control?

Gary
 
On Sat, 02 Apr 2005 23:20:17 GMT, "NSM" <nowrite@to.me> put finger to
keyboard and composed:

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:d2gs41dakkkauohad6p5uttcbsv3dc5gg7@4ax.com...

The coax cable runs from the antenna to an antenna amplifier (about 20'
away) then out to the TV.

The best location for a masthead amp is on the mast. ;-)

How much do you lose in 20' though?
http://www.epanorama.net/documents/video/videocoax.html

Attenuation data for RG-59 B/U:

MHz dB/100 feet
----- -----------
1 .6
10 1.1
50 2.4
100 3.4
200 4.9
400 7.0
700 9.7
900 11.1
1000 12.0

At 500MHz the attenuation is about 8dB/100'. Over 20' there would be a
1.6dB loss. This doesn't sound like much, but in my case a 3dB loss
means the difference between an excellent picture and an unwatchable
one. This 3dB loss results when I try to add a second TV to an
unamplified antenna feed via a 2-way splitter.

In any case, the question has to be asked, if the loss is
insignificant, then why aren't all antenna amps installed behind the
TV, or under the roof away from the weather?


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
<captainvideo462002@yahoo.com> wrote in message
news:1112649993.563557.203680@z14g2000cwz.googlegroups.com...
The problem is we don't use our color printers very often and in the
interim the color cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.
Errrr - what printer is this?
 
"wizzzer@hotmail.com" bravely wrote to "All" (04 Apr 05 00:34:53)
--- on the heady topic of "VCR dead - fuse blown?"

You must always include the brand and model number in a help request!
Typically the powersupply gets fried by the surge when power returns.

A*s*i*m*o*v


wi> From: wizzzer@hotmail.com
wi> Xref: aeinews sci.electronics.repair:44907

wi> There was a partial black out tonight. The lights got very dim for
wi> about an hour. The VCR was recording when it happened and it stayed on
wi> at the reduced energy level. Then when the electricity came back to
wi> full power, the VCR died. It has no power at all. Do you think it blew
wi> a fuse?

.... The first rule of intelligent tinkering is to save all the parts.
 
captainvideo462002@yahoo.com wrote:
The problem is we don't use our color printers very often and in the
interim the color cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.

Sometimes if you let them soak in hot water for awhile they will free
up. I would do this before I refilled them. As for storing them, try
putting them in plastic bag with a moist paper towel and sealing them as
air tight as you can. I can't guarantee success but it has worked for me
more than it hasn't worked.

Newfdog
 
<captainvideo462002@yahoo.com> wrote in message
news:1112649993.563557.203680@z14g2000cwz.googlegroups.com...
The problem is we don't use our color printers very often and in the
interim the color cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.

I'll tell you my own brief experience with both re-inking and ink drying up.
Of course I could be corrected, as there are many different types of
printers on the market. I tried re-inking - drilling the hole, injecting the
ink, etc. etc. First time I was successful, second time I wasn't - it was
very messy and in the end didn't work. Also it doesn't help when many ink
jet manufacturers make it difficult to reink, with pressurized cartridges
etc. I eventually gave up in disgust and on our newer printer just buy
reputable budget cartridges. As far as ink drying up, I suggest that if
you're not going to use the printer for long periods, then at least once a
day or every couple of days you do a registration pattern or something like
that, just to get the ink flowing through the heads. As I said, it's my
experience with only one or two different older printers. Some printers may
be better than others at re-inking and preventing ink from drying up in the
heads.

Henry.
 
When not using the ink jet cartridges, it is best to put them in a very well
sealed plastic bag with a slightly dampened piece of paper towel, or cloth.

As for refilling these, I have had very little quality success, and found
that refilling them was not worth it for me, in relation to the reliability
and performance I had. Also, it is too easy to make a mess when trying to
refill the cartridges. I know of someone that ruined a very nice rug, and
stained a very expensive table top with this procedure.

If you don't need to have a colour printer for every day use, it would be
best to invest in a low cost laser printer, or a high end rebuilt one. There
are rebuilt printers that come with a warranty, and are done by reputable
printer rebuilding places.

A B&W laser printer will cost only a few pennies per page to use, while a
typical ink jet printer can work out to about 50 cents a page just for a non
colour page.

If you need basic colour printing that is of not high end photo quality, a
low cost laser colour printer would be ideal. The toner cartridges can sit
for years, and there is no drying out problem. The drawback is that the
colour laser printers are very expensive to refill. But, for occasional use,
it will last a long time.

Another thing you can do is send out all your colour print jobs. Over here
it is cheaper to do that, than to print the pages at home or in a small
office that does low volumes of print jobs.

Personally I like the HP printers. When the toner cartridge is changed, the
drum is also inside the cartridge. This is a better system, even though the
replacement cartridges are more costly.

In the HP inkjet printers, when a new cartridge is put in, there is a new
set of jets built in to the cartridge. This helps keep the printing quality
up. But, the added quality comes at an expense.

--

JANA
_____

<captainvideo462002@yahoo.com> wrote in message
news:1112649993.563557.203680@z14g2000cwz.googlegroups.com...
The problem is we don't use our colour printers very often and in the
interim the colour cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.
 
This may be a power supply or scan amplifier failure. The proper way to find
out, is to have a tech get in to the monitor, and take readings, and check
for the proper drives to the various stages, to determine the failed
components.

--

JANA
_____

"oddvark" <dgrdinh@yahoo.com> wrote in message
news:1112579529.043370.90350@g14g2000cwa.googlegroups.com...
I have a viewsonic a95F monitor thats dead. When I turn it on, it
makes a high pitched sound the screen remains completely black. Any
idea as to what this is? I checked the fuse by the power line and it
seems ok. I may just give this away to anyone who lives around the
orange county area and wants it.
 
You dodged a bullet here.. In most cases, the fuse will blow because some
other downstream part in the power supply has failed.
Sometimes... as you had the good fortune to find out, the fuse will "pop"
before the other parts, or the fuse will just fatigue with age and blow for
no other reason than it was time for it to fail.
Certainly replacing the fuse is a good "novice" troubleshooting first
step..... however I have had stuff brought into my shop where the original 1
or 2 amp fuse was replace with a much higher amp rating or even tin foil or
a bolt in place of the proper fuse. Not only is this a real FIRE and SAFETY
hazard but also much, much more expensive damage can be easily done to the
equipment. I have even had so-called technical types tell me that this is
a good troubleshooting method because they look for the smoke to find the
problem..... LOL but true.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


<wizzzer@hotmail.com> wrote in message
news:1112658414.491444.85240@l41g2000cwc.googlegroups.com...
I got a pack of 4 fuses for $2.50 from Radio Shack. I replaced the fuse
and the VCR is working perfectly now. It's a Panasonic VCR and it's the
best one I ever had. Never gives me problems.
 
"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in message
news:4d5605efa7dave@davenoise.co.uk...

Indeed, a low input impedance meter has a lot going for it in many day to
day measurements. And of course a swinging meter needle can often tell
more than a digital readout. And is very difficult to blow into the middle
of next week. ;-)
I used a DVM to check for leakage on an AC line and got false readings. A
'real' meter worked better.
--
N
 
"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:hfl051djk10bfli2lvr6814ov74mmte3s1@4ax.com...

How much do you lose in 20' though?

In any case, the question has to be asked, if the loss is
insignificant, then why aren't all antenna amps installed behind the
TV, or under the roof away from the weather?
Cos you're in Oz mate, not in the US. Sometimes people have to put the
antenna on a mountain 2000 feet away. Other times you have to snake cable
down 300 feet of wiring closet in some building. You have to choose the way
to do the job.
--
N
 
"Steve" <popmusic@att.net> wrote in message
news:1112591232.647394.18540@g14g2000cwa.googlegroups.com...
I'm putting together a talent show and would like audience members to
vote for performers using keypads. I think I need a bunch of infrared
transmitters/keypads, a receiver, a computer, and some software. Does
anyone have an idea where I can get the keypads and put together such a
system inexpensively? Thanks for any info.
IR will suck. Use RF.
--
N
 
<captainvideo462002@yahoo.com> wrote in message
news:1112649993.563557.203680@z14g2000cwz.googlegroups.com...
The problem is we don't use our color printers very often and in the
interim the color cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.

I've had very hit and miss luck with inkjets and no one brand is always
good, some of them just dry up constantly, others don't. Lately it seems the
HP printers seem fairly good about not drying, though I'm itching to get a
color laser eventually.
 
"NSM" <nowrite@to.me> wrote in message
news:xAl4e.155656$gJ3.78397@clgrps13...
"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in message
news:4d5605efa7dave@davenoise.co.uk...

Indeed, a low input impedance meter has a lot going for it in many day
to
day measurements. And of course a swinging meter needle can often tell
more than a digital readout. And is very difficult to blow into the
middle
of next week. ;-)

I used a DVM to check for leakage on an AC line and got false readings. A
'real' meter worked better.
--
N

I much prefer digital for day to day work, though analog meters are still
clearly superior for certain uses. I suppose it's kinda like manual
transmissions in cars (which I very much prefer) though the rest of the
world seems to be lazy and want an automatic but to each their own.
 
I had the same problem with the color cartridges - use em once every few
months, and they are dead. As for the black and white, I always have success
filling them several times. Initially (i.e. the 1st few pages) the print
quality is bad, or doesn't work that well. However, I just print a few test
pages and they're ok after that. It also seems to help if you leave them
overnite before printing.


<captainvideo462002@yahoo.com> wrote in message
news:1112649993.563557.203680@z14g2000cwz.googlegroups.com...
The problem is we don't use our color printers very often and in the
interim the color cartridges dry up. The black ones do too in record
time it seems also. This is frustrating and expensive as well. We
bought a refill kit for our specified cartridges, and tried refilling
the blacks first. We drilled the hole on top and refilled them and then
plugged the hole all with only marginal success. I have two black ones
sitting in front of me right now that are refilled but won't print. Is
there a trick to successfully doing this? And is there anything I can
do to try to prolong the life of these stupid things between long
periods of inactivity? Thanks, Lenny Stein, Barlen Electronics.
 

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