Toshiba TV29C90 problem; Image fades to black...

"dave" <tool_box@weirdstuffcox.net> wrote in message
news:bGz0e.72752$SF.999@lakeread08...
Travis Jordan wrote:

Do some reading.

http://www.bluemax.net/techtips/ATXPowerSupplyWiring/ATXPowerSupplyWiring.htm

thanks, travis, I've been reading and saw that page yesterday AM.
admittedly, it DOES have good info re the ATX PS mobo connector pinouts
(and I tried accessing a dead link on the page for more info, too). but
that page:

1. makes no mention of the 'mystery connector' on my "microATX" PS, and
2. gives no schematic (or other info) regarding what the pinouts are on
an "micro ATX" power supply to mobo connector (needed for comparison)

so, I guess I'm about a third of the way closer now to 'solving the
great mystery'

thanks again

tool

ps-still haven't been able to locate pinouts for the mobo connector on
an "ATX micro" power supply, as either a 'suggested industry standard'
-or- a schematic (or other specifics, in any form) for -any- makers mATX
power supply...

:-\
Click to expand...

I remember once I plugged a microATX power supply into a standard ATX
motherboard and the PSU started billowing smoke. I would have thought the
connector pinouts would be the same given that the connectors are identical
and they're both flavors of ATX but apparently not.
 
I have seen this same problem on two Sony camcorders. The symptom starts with
the camcorder wanting to tell you to remove the tape for some unkown reason.
You take it out, put it back and things seem fine for a while. Later, the motor
spins up like crazy when you load a tape and you think it is going to explode.
Later it simply stops recording even though the motor is running and the tape is
moving.

I've been told the problem is simply age. The camcorder's electronics are very
fussy and some of the components drift in value and the thing basically goes out
of range of its operating capabilities. The feedback loops go out of lock and
it simply stops functioning properly.

Some claim this is piss-poor design by Sony ... I might agree. Mechanically the
unit is sound and has maybe 7 years of use on it, but less than 100 hours total
run time. It dies because it gets confused with itself. Not good.

It will cost between $100-$200 to fix it. Not worth it. My recommendation ...
go buy a Sony TRV240, 350, 460, or 480 digital-8 camcorder (which will play your
old 8mm tapes) and move everything to DVD on your computer. I make this sound
simple, but it will take a good bit of time depending on how much you want to
mess around.

I have an fx620 myself and like it alot. It is now a battery uncharger.



On 1/28/05 6:58 PM, tgies wrote:
I have a Sony CCD-FX620 camcorder that seems to work perfectly save one
problem... it likes generic "OH NO EJECT THE TAPE" errors. In VTR mode, it
usually works fine, except occasionally (especially when rewinding or fast-
forwarding) it stops and flashes the eject icon at me until I turn the
thing off and eject, and sometimes it doesn't even entirely eject; I can
hear it lifting the tape off the drum but it does not open the door and it
is necessary to disconnect the power and reconnect it before it will eject.

Then when I am in recording mode, it more often than not starts beeping and
telling me to eject the tape as soon as I close the tape door (before the
tape carriage thing slides back down into the camera). Occasionally if I
push on the tape door a little bit this stops and I can record, but then it
usually gets mad next time I move the camera around and does the same thing
again. Grr. The way I close the door seems to affect it, too: even pressure
on both of the top corners while closing slowly but with a few seconds of
very much pressure after it's latched tends to reduce the frequency of the
problem.

Any ideas on how I might go about fixing this thing?
Click to expand...
 
On 25 Mar 2005 02:19:22 -0800, beerismygas@yahoo.com (beerismygas)
wrote:

i have a noname car stereo
Click to expand...
This is most likely the problem then.... cheap mechanical
construction.

which is looping up various tapes.
the tape, instead of going nicely around the takeup reel will loop
around the supply reel.

i opened it up to see how it works

there is only 1 sprocket for play and fast forward.it doesnt have a
sprocket for reverse. i cant understand how the tape can loop unless
the motor somehow intermittantrly goes beserk and drives the tape in
reverse! any theories? thanks
Click to expand...
 
tariq.1.rahim@spamgourmet.com writes:

it's panasonic color set, 15 years old. i have cable and watch the
cable channels thru my vcr.

my TV is prone to turning into snow a few minutes after I turn it on.
turning it off and on again solves it.

what gives? is this a tube problem or is it something else? thanks.
Click to expand...
Tube problem? Even someone who knows nothing about how TVs work should
be able to figure out how impossible this would be.

It's probably a bad connection or marginal component.

--- 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.
 
Sounds like maybe dry joints ,bad tuner or lacking voltages to tuner.

kip
<tariq.1.rahim@spamgourmet.com> wrote in message
news:1111723840.133971.26160@z14g2000cwz.googlegroups.com...
it's panasonic color set, 15 years old. i have cable and watch the
cable channels thru my vcr.

my TV is prone to turning into snow a few minutes after I turn it on.
turning it off and on again solves it.

what gives? is this a tube problem or is it something else? thanks.
Click to expand...
 
You should give the model number as well as the name of the set when asking
questions.

This may be a failure in the tuner, or there is a problem with the AGC.

Bring the set in for an estimate if you want to have it properly serviced.

Considering the age of the set, I would think more so it is time for a new
one!

--

JANA
_____


<tariq.1.rahim@spamgourmet.com> wrote in message
news:1111723840.133971.26160@z14g2000cwz.googlegroups.com...
it's panasonic color set, 15 years old. i have cable and watch the
cable channels thru my vcr.

my TV is prone to turning into snow a few minutes after I turn it on.
turning it off and on again solves it.

what gives? is this a tube problem or is it something else? thanks.
 
electricitym@yahoo.com writes:

Sam:
I am certain that you realize that most customers in most shops always
think that the picture tube is bad WHENEVER there is any kind of fault
symptoms with their television.
electrocitym
Click to expand...
Yes, they also think that there is a film projector inside. :)

--- 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.
 
pertnoy wrote:
If someone really needs a quality vcr, get an old RCA, Hitachi (think has
about 7 belts, replace all the belts, clean the heads, tape guides etc, and
idler tire. one with all those replaced properly will probably last 20
years, might just need another head cleaning later, but the RCA, Hitachi 7
or 8 belt vcr`s from the 80`s, are likely the best vcr`s ever made.)

I agree. I took care of one of those for a family member for about 15
Click to expand...
years by simply replacing the belts every two to three years and regular
cleaning and lubrication.
 
say what? ?
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"boki" <bokiteam@ms21.hinet.net> wrote in message
news:4c3c095a.0503250751.7d8c5816@posting.google.com...
Dear All,
Do you have this word "Green line" in your test procedure?

I saw a lot green blocks, but two engineer say that called "Green line".
why?


Best regards,
Boki.
Click to expand...
 
Sam Goldwasser wrote:
electricitym@yahoo.com writes:

Sam:
I am certain that you realize that most customers in most shops always
think that the picture tube is bad WHENEVER there is any kind of fault
symptoms with their television.
electrocitym

Yes, they also think that there is a film projector inside. :)

sam
Click to expand...

I got a phone call at the shop once from an old lady: "There is no
red on my TV. My husband says that its out of red paint. What do you
charge to refill the red paint can?"

--
?

Michael A. Terrell
Central Florida
 
cummings@stingray.net wrote:
I'm looking for this IC to repair an Exacto-Weigh scale controller. I
have not found a place that will sell 1 of them to me, they all have
huge minimums and for a $5 part way too much to buy.

Does anybody know a place I can get it?
Click to expand...

Is this a 40 pin Hitachi chip? If so it is probably a second source
Motorola 6821. This are still available from several dealers and used
ones show up on old computer boards.

--
?

Michael A. Terrell
Central Florida
 
"Michael A. Terrell" (mike.terrell@earthlink.net) writes:
cummings@stingray.net wrote:

I'm looking for this IC to repair an Exacto-Weigh scale controller. I
have not found a place that will sell 1 of them to me, they all have
huge minimums and for a $5 part way too much to buy.

Does anybody know a place I can get it?


Is this a 40 pin Hitachi chip? If so it is probably a second source
Motorola 6821. This are still available from several dealers and used
ones show up on old computer boards.

Just as a second opinion, that would be my guess based on the part number.
Click to expand...
The "HD" is what Hitachi used, and they did have Motorola originated
ICs in their catalog, and for reasons unknown they changed the "8" to
a "3" for their part numbers in the 68XX line.

Michael
 
<electricitym@yahoo.com> wrote in message
news:1111764506.770295.322920@o13g2000cwo.googlegroups.com...
Sam:
I am certain that you realize that most customers in most shops always
think that the picture tube is bad WHENEVER there is any kind of fault
symptoms with their television.
electrocitym
Click to expand...
Except for when the tube *is* bad, then they think it just needs an
adjustment.
 
I cannot believe that since this jackass cannot set his internal date, that
Im stuck with this stupid posting for another 3 months at the top of my
newsgroups

"none" <Vampyres@nettaxi.com> wrote in message
news:9kqsa1d55qkb45fo8mhqqvojkmgu6hp0q3@4ax.com...
I'm digging alot of my older video cameras out of the warehouse to
try and get a bit more use out of them before they rot out completely.
Most are single tube/chip industrial with a few 2 and 3 chip stuff.
All use the the vhs 10pin connector and I'm looking for a source that
would have the female connectors.
I'm trying to make adapter/breakout boxes for them to enable
connecting them to a variety of input devices.
Does anyone know of a source for these connectors, either new or
used/salvage parts?
(I tried scouring the local junk shops and such looking for old
portable vhs recorders that'd have them with no luck.)

I'm also trying to find the old 10pin to 14pin adapters for fitting
the low end industrial stuff to broadcast/eng recorders.
Any info is of course greatly appreciated.
Click to expand...
 
"boki" <bokiteam@ms21.hinet.net> wrote in message
news:4c3c095a.0503252240.21211df@posting.google.com...
What is "Green line" problem on video test.
I just wanna make sure "Green line" is onomasticon/onomastics
Click to expand...
"Onomasticon": a list of proper nouns naming persons or places (Directory?)

English speakers do not use this term. I cannot understand it in the context
of a video test.

N
 
Call a Technician in to fix the convergence section.

<tomgilb407@aol.com> wrote in message
news:1111841259.018811.35570@g14g2000cwa.googlegroups.com...
Hello. Our AV-56WP30 TV was working fine the other day. The next
time it was turned on, all the colors were mixed. We were told to
check the Convergence settings, and sure enough, they were ALL off.

The only thing is the Red won't adjust vertically. I would appreciate
any help with this.
Click to expand...
 
On 26 Mar 2005 06:40:12 -0800, cummings@stingray.net wrote:

Interesting, it is a Hitachi 40 pin PIA chip and maybe the Motorolla
part might be easier to source. I have yet to find some place willing
to see just one.
Click to expand...
A substitute for the MC6821 is made by NTE, part number NTE6821. Check
their web site for a distributor in your area.

http://www.nteinc.com/


Mike Capel

capel AT mb DOT sympatico DOT ca
 
cummings@stingray.net wrote:
Interesting, it is a Hitachi 40 pin PIA chip and maybe the Motorola
part might be easier to source. I have yet to find some place willing
to sell just one.
Click to expand...


http://www.jameco.com/webapp/wcs/stores/servlet/CategoryDisplay?storeId=10001&catalogId=10001&langId=-1&categoryId=10951
and enter 6821

$3.95 This are pulls, but it is an obsolete part.

--
?

Michael A. Terrell
Central Florida
 
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