Toshiba TV29C90 problem; Image fades to black...

[eddumokweer]

Whick model/brand?

Depending the brand/model there could be several problems for the fault.

If a idler wheel is placed in the vcr then this is one of the parts together
with the belts and the pinchroller to suspect. Also the mode-select-switch
could be the problem.

If you open the vcr and look at the deck, you probably can see where a belt
or a wheel or the idler makes the problem.

Greetings Peter

<maradcliff@UNLISTED.com> schreef in bericht
news:c4tpivk678ls5t9q7v865jp8bmgiajv9md@4ax.com...

How does one fix a VCR that eats tapes. I know the problem is
mechinical, but how in the heck do I test the thing? Do I need to
purchase a gross of blank tapes for the machine to eat while I repair
it? Or, does someone make an unbreakable tape to use for testing?

Mark

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[Alan Harriman]

On Sun, 03 Aug 2003 06:42:48 -0500, maradcliff@UNLISTED.com wrote:

How does one fix a VCR that eats tapes. I know the problem is
mechinical, but how in the heck do I test the thing? Do I need to
purchase a gross of blank tapes for the machine to eat while I repair
it? Or, does someone make an unbreakable tape to use for testing?

Either purchase a commercially available clear plastic "dummy" test cartridge,
or fabricate your own from an unwanted tape. To make, disassemble a cartridge,
remove and discard the two reels & tape, cover the two end sensor holes from the
inside with black tape, remove the clear plastic tops, then reassemble. To use,
simply load the blank cartridge and carefully watch for anything unusual as the
tape loads, cycles thru play, ff, rew, ejects etc.

Alan Harriman

Mark

 

[Tom MacIntyre]

On Sun, 03 Aug 2003 10:32:54 +0200, E. Kunze <ebkunze@t-online.de>
wrote:

On Wed, 23 Jul 2003 13:48:56 GMT, techno2nospam@videotron.ca (Doug
Taylor) wrote:

A friend gives me his old PC Pentium 100 Mhz as it's not working.
As a challenge I decide to dig into to see whats wrong.

Just my two cents:
Is there a Dallas chip on the mobo? Black cube, dual inline,
print "Dallas" or "Odin" - sorry, don't remember the numbers.
AFAIR it is a clock with battery chip. I always wondered, who
ever got the brilliant idea to implement a battery into a chip
and then solder that to the board.
If there is, try to replace that. Estimated lifetime was about
ten years imho.
Eb

I've seen DS1287 in an 8086, and a DS12887A in a 286. Probably
different for a Pentium.

Tom

 

[Sam Goldwasser]

He says it runs at top speed on 115 VAC. I assume by this it doesn't smoke.
Thus, the cord is probably correct for the motor. It's quite possible for
a motor rated at 32 VDC to operate on 115 VAC due to its inductance limiting
current.

What I would ask is for the original poster to draw a diagram of the wiring.
That would help a lot more than speculating on how it might have been
incorrectly wired years ago (which IS possible but let's start with the
basics!).

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the Feedback Form at repairfaq.org. Thanks.

 

[Dave D]

<maradcliff@UNLISTED.com> wrote in message
news:c4tpivk678ls5t9q7v865jp8bmgiajv9md@4ax.com...

How does one fix a VCR that eats tapes. I know the problem is
mechinical, but how in the heck do I test the thing? Do I need to
purchase a gross of blank tapes for the machine to eat while I repair
it? Or, does someone make an unbreakable tape to use for testing?

Mark

No, just wind the eaten tape back in and reuse it for testing. Try not to
allow the damaged part to contact the heads, you may need to wind the tape
on by hand to achieve this.

Open the VCR, insert a tape and watch very carefully what happens. When it
laces up, make sure it does so cleanly. Press play, does the tape get drawn
through the pinch roller/capstan properly, or does it ride up and crease? Is
the take up spool (the right side tape spool) rotating? These are the first
things to check. If the pinch roller seems to cause the fault, clean it
thoroughly by hand (a head cleaning tape is no good). If the take up spool
is sticking check clutch/belt/idler. Eject the tape. Prior to the tape
starting the eject, the spool should rotate and wind the tape back in as it
unlaces, does this happen?

On the very scant info you give, it is impossible to be more specific. Post
the make, model number and your diagnostic findings and the chances are
someone in the group will lead you straight to the fault.

Dave

 

[Jim Yanik]

Gary Tait <taitg@hurontel.on.ca> wrote in
news:98toiv83mv8qfv8fs57p2204db8l644qmd@4ax.com:

On Sat, 02 Aug 2003 15:32:38 GMT, techno2nospam@videotron.ca (Doug
Taylor) wrote:


Well digital TV is here to stay.
Question is.... What do we do with all those millions of
analog TV's, VCR's, Video Cameras and Analog video test
equipment.

The actual TVs and VCRs will still work, as there will (hopefully) be
digital STB convertors with analog outputs cpmatible with old analog
TVs.

Except that you will not get hi-definition resolutions on your NTSC or Pal
TV set. The set-top convertors will change the video stream to NTSC(or
PAL),hopefully with as few artifacts as possible,and letterboxing.But you
will have a nice noise-free signal,until it drops out completely or
'freeze-frames'.Just like Direct TV.

--
Jim Yanik,NRA member
remove null to contact me

 

[Jim Yanik]

"William R. Walsh" <newsgroups1@idontwantjunqueemail.walshcomptech.com>
wrote in news:e70Xa.52910$YN5.41389@sccrnsc01:

Seeing as all TV programming is total crap these days, I prefer making my
own. It may not be much better, but I enjoy the process and I like doing
visual effects and illusions with the camera.

That's what I will do with my "obsolete" analog video equipment for many
more years to come.

The day digital TV is all that can be had is the day I stop watching TV
completely. I'm not paying good money for a signal that won't degrade as
gracefully or provide anywhere near as good a quality as a strong analog
signal...nor am I paying for a conversion box.

William

From what I understand,the FCC plans to keep broadcasting NTSC TV until the
percentage of digital TV ownership reaches some certain point I can't
recall.ISTR 80%;but no guarantees on that figure,nor do I know how they
plan to determine the level of digital ownership.Census???

--
Jim Yanik,NRA member
remove null to contact me

 

[Arthur Jernberg]

May want to try a variable voltage to the AFC Conection. Since it will
change with each channel being selected.
"John Todd" <john@Neopha.44in88.net> wrote in message
news:slrnbiq9q0.n4.john@Neopha.44in88.net...

This old Hitachi CU-100 is a sturdy, steel cab portable
TV, 12Volt capable, worth saving. Tuner had bad mech. defect,
I replaced with a similar but newer unit, and the set works
ok.
The replacement tuner has a connecion for AFC, the old
one didn't. I left it unconnected. I wonder if there is a
better treatment for this? Tuning must be corrected at each
turn-on, and often when switching channels. I wonder if I
could improve on this by biasing the connection, or
grounding thru a cap, or possibly adding a transistor
driven by AGC to simulate AFC. Anyone remember this far
back?



--
_______________________________________
John E. Todd <> jtodd@island.net

Note: Ensure correct polarity prior to connection.

 

[Bill Jr]

Lenny,
Replace that C718

Bill Jr


"Lenny" <captainvideo462002@yahoo.com> wrote in message
news:d980bc2c.0308022206.5864f8c2@posting.google.com...

The complaint on this set was that sometimes it would work for a brief
time and then sometimes it would stay on for around 20 minutes. I
resoldered anything that looked suspicious and tried it. It will power
up and after about 10 seconds the picture will shrink in from all 4
sides and the set will quit. There is hardly enough time to decide
what to look at before this occurs. Does anyone have any information
on this set with this symptom? Thanks, Lenny Stein, Barlen
Electronics.

 

[Marcin Frankowski]

On Sun, 3 Aug 2003 22:22:04 +0200, "Razor's Edge"
<stefan.toftevall@bredband.net> wrote:

British TV standard is so-called I standard. It is UHF only - VHF
frequencies used to be occupied by the old 405-line standard from the
late '30s, these transmitters have now been off air for about two
decades - and uses 6 MHz video-to-sound carrier spacing as far as the
analogue sound is concerned. It is FM modulated. IIRC NICAM carrier is
also on different frequency than in Europe.

--
Regards, Marcin
marcinf -at- globe.net.nz
http://www.nowazelandia.prv.pl http://www.antyspam.prv.pl

 

[LASERandDVDfan]

Question is.... What do we do with all those millions of
analog TV's, VCR's, Video Cameras and Analog video test
equipment.

Well, if anyone has a Sony SL-HF1000, SL-HF2100, SL-HF900, SL-HF750, or
SL-HF870D SuperBeta deck they want to get rid of because of "obsolesence," I'd
be more than willing to take it off their hands. In fact, I'd pay for the
shipping and handling! - Reinhart

 

[Leonard Caillouet]

The default settings will result in needing to completely align the unit,
which you seem to need to do anyway. If you don't understand how to align
this set any better than you seem to from this post you should take it to an
experienced Mitsubishi tech.

If you want specific help you need to post some specific information, like
how is the picture messed up or which parameters you fiddled with.
Regardless, I doubt that help online will be much assistance in this case.

Leonard Caillouet

"David" <reddolphin@comcast.net> wrote in message
news:d5ac6f5c.0308040400.1d072043@posting.google.com...

Hello, I was trying to change the settings in the advanced menu screen
(technician's screen). Unfortunetly, I messed up the settings and I
forgot to write down the initial settings. If anyone has a Mitsubishi
VS-4543, I would be very grateful if you could please post the default
settings for the "CONV GEO" subscreen. To get to this, you have to
press "MENU" then 2357 and press the "AUDIO" button until you get to
the "CONV GEO" screen. Once you are there, please press "VIDEO" to go
through all of the settings and write down all of the default numbers
to the right of the 3 or 4 letter abbreviation. Thanks in advance!

 

[Razor's Edge]

Marcin,

My customer doesn't care about NICAM sound. He only want ANY sound, since he
is able to recieve the picture perfect.
I'll try to modify the sound de-mods. to operate at 6 Mhz instead of 5.5
Mhz, changing ceramic filters and so on.

Any additional advice is always welcome,

Regards
Stefan




"Marcin Frankowski" <ab@anti.spam.com> skrev i meddelandet
news:1sku9wfkx7fom$.bta0zvgdwphp.dlg@40tude.net...

On Sun, 3 Aug 2003 22:22:04 +0200, "Razor's Edge"
stefan.toftevall@bredband.net> wrote:

British TV standard is so-called I standard. It is UHF only - VHF
frequencies used to be occupied by the old 405-line standard from the
late '30s, these transmitters have now been off air for about two
decades - and uses 6 MHz video-to-sound carrier spacing as far as the
analogue sound is concerned. It is FM modulated. IIRC NICAM carrier is
also on different frequency than in Europe.

--
Regards, Marcin
marcinf -at- globe.net.nz
http://www.nowazelandia.prv.pl http://www.antyspam.prv.pl

 

[Mike Berger]

Are hebrew resistors marked from right to left?

"TheResistor.Net" wrote:

Additionally we have fixed all bugs on the site that were on the
resistor color codes calculators. It is now available working in our
new design in 8 languages - French, English, Norwegian, Hebrew,
German, Portuguese, Spanish & Italian! We will be adding more as time
goes by.

 

[Rich Greenberg]

In article <sc8tiv4fbois2ogqk3csjs0457f7fb6juh@4ax.com>,
<americanfamilyagent207@livewire.com> wrote:

From the Livewire Newsfeed

August 4, 2003

Are you sure that dateline shouldn't be April 1?

--
Rich Greenberg Work: Rich.Greenberg atsign worldspan.com + 1 770 563 6656
N6LRT Marietta, GA, USA Play: richgr atsign panix.com + 1 770 321 6507
Eastern time zone. I speak for myself & my dogs only. VM'er since CP-67
Canines:Val(Chinook,CGC,TT), Red & Shasta(Husky,(RIP)) Owner:Chinook-L
Atlanta Siberian Husky Rescue. www.panix.com/~richgr/ Asst Owner:Sibernet-L

 

[Jeeters]

For those that believe this, I got some prime swamp land for ya.

 

[Electronicien]

Hello,
Sorry i cant help you but you can help me .
Have you the schematic oh of a philips 29pt822b Fl4.27.
thanks for your help and excuse me for my English.
Regards,
Hervé
"Stan" <slb04786@yahoo-nospam-.com> a écrit dans le message de news:
GDWdnV6Zcb5IBrOiXTWJhQ@gwi.net...

I closed my shop about 3 years ago so I don't have the latest service
manuals. My sister in law has a Philips 36PT41B1 tv that keeps shutting
down on her. She says the front power LED will flicker on/off at random
when it is in shutdown. If she turns it off via the front power button
sometimes it will turn right back on and other times it has to be
unplugged
for a minute or two before it will turn on. It sounds like a heat
intermittent or a cold solder joint to me. Anyone know of any known
problems with this model/chassis? Anyone have a schematic they would
share
with me? She lives about 7 hours away and I told her I would look at it
next week when I come down for the birth of my first grandchild. Any help
would be appreciated. Here is what she gave me over the phone:

Philips
36PT41B1
chassis model 36H8007592

Thanks in advance
Stan
slb04786@yahoo.comX (Remove the X from my email to contact me direct)

 

[Mike]

yea, really. If it were really that harmfull, it would have exited the
plastic uncracked too.

yea fucking right.


"Jeeters" <noham@nospam.com> wrote in message
newsrudnQEtTI10NbOiXTWJlg@giganews.com...

For those that believe this, I got some prime swamp land for ya.

 

[Peter]

Fatal Radiation ? From a DVD player, what was powering the thing, Uranium ?


americanfamilyagent207@livewire.com wrote:

From the Livewire Newsfeed

August 4, 2003

A New Mexico family was killed by a DVD player last Friday.
Authorities reported that it appeared that the DVD player had just
been purchased. Apparently an accident caused the player to fall off
the television set in their living room. It is suspected that the
family cat possibly knocked it down. The plastic case of the DVD
player became cracked during the fall to the floor, emitting the fatal
radiation which killed the entire family of seven.

Authorities were notified on Saturday when a relative came to visit
and found the family car in the driveway and no one would answer the
door. When the police arrived they used forced entry and were shocked
at what they found. There were dead bodies laying all over the living
room floor, including the husband, wife and five children. None of
them showed any signs of physical abuse, and all other possibile
causes of death have been ruled out. Authorities are positive the
deaths were caused by the DVD player.

Additionally, the first officer to enter the premises was struck down
and affected by the harmful radiation, and is hospitalized in critical
condition. The electric company was summoned and disconnected the
power to the premises before further action could be taken.

A cat was found laying right next to the fatal DVD player, which leads
to the suspicion that the cat was the cause of the player falling off
of the television.

Names of the family members are being withheld until further
investigation and notification of relatives of the deceased.
Funeral arrangements will be announced shortly.

--
At the source of every error which is blamed on the
computer you will find at least two human errors,
including the error of blaming it on the computer.
--
Thats not funny!
---
Signature generated by SillySigz!
http://www.sturec.com/sillysigz.shtml

 

[Rick]

Happens every fucking summer. Millions of kiddies in desperate need
of parental guidance, and a social life.

"blcker" <ohno@nospam.com> wrote in message news:scyXa.6778$8N.522037@twister.socal.rr.com...

Sheeesh! Let's file this with the Bonsai Kitty story.


"Jeeters" <noham@nospam.com> wrote in message
newsrudnQEtTI10NbOiXTWJlg@giganews.com...
For those that believe this, I got some prime swamp land for ya.