أعطال وصيانة تليفزيون-Repair-TV-GRUNDIG

Quote:

So
that the "Flachmänna" (still) do not last as long as the good old "tube
devices," which I'm not natural. But if such a more or less expensive
flat-screen then on average only 4-5 J. holds, but then I find a little
sparse and concise.

Here you must also remember, as the decline in prices over the last say, let's say, 20-40 years progressed.

Examples:

Our first color TV SABA (Ultra Color without remote control, 67 inch
tube) cost 1976 or 2300, - DM (now nearly 1,200, - EUR), the Grundig
from my previous posting in 1990 cost 1.750, - DM (now nearly 900, -
EUR), the SABA in 1991 proud 2.100, - DM (well over 1,000, - EUR).

So, now you remember times that this is the first case, a 67-cm
device, MONO, NO Remote Control, in the second case, a 63-inch STEREO
device with FB and the third Case, a 72-inch STEREO device with FB-all
format is 4:3 - and what you do today? Today you can get TVs with full
HD, with 81-92-117 cm and more, with all sorts of harassment, for
significantly less money (even without considering the value of our
"money" called EURO and without consideration of wage increases since
the 70s - back then were DM 2,300 or more correctly, a lot of money).

Somewhere must be the long-term quality fall by the wayside. No
manufacturer plans the life of a TV set for 10 more, 15 or even 20
years. That would harm themselves and even, yes, no one buys something
new.

Today is everything, finished devices, or at least most of the
components gooks country, the quality of these parts also has nowhere
near the level as a few decades ago.

That was one reason why all the German manufacturers have gone down the drain: The devices were too long. [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]

On the other hand, a TV set at the time was a purchase for a
generation. Who e.g. in 1955 was 40 years old and then bought his first
TV set (or could afford), who took over his life, determined not buy
more than 2 or 3 devices.

The SABA Ultra Color has a proud 24 years from 1976 served its purpose - veeeery often many hours a day! [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]

When a now 40-year-old buys a new TV set, he needs until his
(statistical average) with 85-90 years of death for at least 6 or 7 new
units!

Thus, the whole bill back into perspective a little.

The flavor is bland: The waste mountain grows and grows and grows ... [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]

Such a device has 2-year warranty.

In the time it should not break.

Then the unit should break down or become obsolete as quickly as possible, so that something new is purchased.

This is an intended lifespan of about 2years and 2 months.

A repair is not planned and often not affordable for lack of spare parts available.

Very well economically, ecologically disastrous.

REALLY bad is that the trend in cars in the same direction.

Greetings Gerrit

There is still a lot to:

- The devices are optimized to meet the increasing production to reduce production costs

- It is always packed more into it

- It is minimized at the same time more and more

This means that a device for 50 € you apart and reassemble need to
change for € 3 a piece for 50 cents. It is also not enough more to put
the pieces after the common sense to neatly side by side. Without
documentation it is not as far. The fitting or retrofitting is always
more difficult. Every talented tinkerers could build earlier example, a
car radio.

On the other hand, one has ne good profit margin as a repairman, I have to NEM Medion LCD already earned time NEN Fuffi [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]

Since time was not the exception Siebelko, but the MOSFET in the power supply and its control broken.

The vertical stripes with, I also know. Was only one, then two, then
three and now four. All but disappeared after about 10 minutes again.

Since the device has 5 year warranty and is only 3 years old, I'm
still waiting for a while. Then I get a new one, because a repair
(replacement value at that time: 1400 €, now new value: 700 €) does not
pay.

Everyone else in my acquaintance have no problems.

However: a tube set is in our family since the turn no longer broken.

Quote:

Who
gave me some time at PC LCDs are told that the durability of these
devices in about five years to come. Can this be the "big" so
transmitted?

Someone has once told that he could walk over the water and identity to make wine.

I think such generalizations leading the way for a little lump.

My home PC is a 19 inch TFT by Fujitsu-Siemens, which I bought cheap
from my company, because that was taken out of use after a few years.
The company already ran in at least 5 years (approximately nine hours on
a daily basis - of course), and has been running for three years at my
house again about 3 hours a day. Heights strip or something. Possible
that he is less brilliant or anything but gradual processes you do not
get with Sun

I'm beginning January NEN bought new plasma from Panasonic, not just
for cheap and I expect that will last longer than 5 years for the
money.

If you just buy the cheapest of the cheap, you can expect to hold even less time to have fun with it.

But: Expensive is not always better, but I'm of the opinion that
there are still another 2-3 companies to lose the reputation NEN.

Ähhhm ...

Stego exists, the SABA yet?

Greetings Gerrit

Repair: SE Grundig

Error: No image / sound; OK LED - Type: SE7076TOP

Device Type: CRT TV

Defect: No picture / sound, LED OK

Manufacturer: Grundig

Device Type: SE 7076 TOP

Chassis: CUC 4511

Measuring instruments: multimeter, oscilloscope

Hello,

the device shows no picture!

Sound and program selection works perfectly.

Obviously, no high voltage (high "whimper" is missing when you turn - no static electricity on the Schirmoberläche.

There is no filament voltage of the cathode ray tube (no glow in the tube).

HOT is i.o.

How do I go about trouble shooting the most? Or a typical component of the error in this type of device can be responsible?

Do you have voltage at the collector of the HOT?

If the HOT controlled? (Oscilloscope)

C-E voltage on HOT applied (180V)

no control signal at the base!

Quote:

no control signal at the base!

Diagram and get track of where the control comes from!

If you can find where it is "swallowed" the signal.

Diagram I have, examine whether time to pin 1 of the 8140 TDA at all what "comes out"

The IC have been changed about a year ago. (Along with the HOT)

Vcc of the IC is to 12.2V

No signal at the output pin 1 will probably replace the TDA times.

Stop! Not so fast.

The TDA is the only driver. As can be connected to Pin 1 "come out"
only slightly, if applied to pin 7, a corresponding signal. I would
first check with the Oszilloguck.

So to Pin 7 (Input) was due to a clean square wave signal. Looked exactly like on the screen image in the manual.

TDA 8140 replaced the 560pF Cond.

Device runs!

You're welcome.

Thanks for the feedback!

Repair: M72.410 Grundig

Error: image is blurred - Type: M72.410PiP

Device Type: CRT TV

Defect: blurred image

Manufacturer: Grundig

Device Type: M72.410 PiP

Chassis: CUC1842

Measuring instruments: multimeter

Hello

In my Grundig TV is at once the picture has become blurred.

I have the two capacitors on the board already focusing

changed, but unfortunately the error still exists [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]

What can I do as yet, so you can see clearly again?

about help from you I would be very happy.

Bye Torsten

Schematic available.

Hi,

times have the "focus" potentiometer and measured the resistance on the focusing plate R64004. If everything is Ok.

If I turn the focus knob until it stops, I get vertical focus towards good.

And I have the knob on the Kasscade also complete stop to turn around a "somewhat" better horzontalen

Focus to get out.

That is also not true. [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] Where there may be more to it?

Bye Torsten

All focus again, new capacitors and cascade it.

Too bad no one has replied to me here.
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] But fortunately

another forum.

Bye Torsten

Repair: Xentia Grundig

Error: device remains black - Type: Xentia82Flat

Device Type: CRT TV

Defect: device remains black

Manufacturer: Grundig

Device Type: Xentia 82 Flat

Chassis: MFW 82-430/8 Dolby

Measuring instruments: multimeter

Our TV switches itself off for some time no longer on the screen
remains black. The standby lamp on the switch is green. When you start
with is the typical "power noise".

Unfortunately I can not clearly assign the error, since everything
is working again after I unscrewed the case and removed. To me this
looks like a "loose contact", possibly due to a cold solder joint or the
like.

Has anyone experienced something similar already and can tell me
where I should resolder if necessary, so the error does not recur.
Everything would be something nachzulöten overkill.

I hope to read your comments / solutions.

with your TV, I would investigate first time the solder joints,
especially in the power supply and in high - voltage / Ablenkstufe.
There are often times cold solder joints.

You may also knock off the TV once carefully (chassis), then perhaps Displays the error again.

When the solder, resolder all the best, what is suspicious. The
modules may even examine who also like cold solder joints on the plug
strip.

Attention, in the power supply to take care of the charging
capacitor is unloading, or it can be dangerous for yourself and the
components.

Repair: M70-690 / 9 Grundig

Error: image after 10 minutes - Type: M70-690/9TOP

Device Type: CRT TV

Defect: image after 10 minutes

Manufacturer: Grundig

Device Type: M70-690 / 9 TOP

Chassis: CUC6851

Measuring instruments: multimeter

I hope someone has a tip for the problem. After switching on the
image to appear only after about 10 minutes, sound is right there. The
device then works for hours without problems.

Am grateful for any advice - for me scrapping the TV is really a
shame. Schematics are available, multimeters, soldering station too, but
no oscilloscope.

Serial code number 167 085 033G

Check the horizontal and vertical deflection of the chassis for the electrolytic capacitors as well as cold solder joints.

Sounds like a thermyschen error if the device is warmed up 10 minutes because image.

It is quite possible that the vertical deflection Kund is over. (TDA ????)

Have unfortunately no record of the CUC6851.

have the screen voltage at the regulator turned up something UG2. Image
is now after 30 seconds but are easy carriage return lines appear.

CRT consumes? Color red has also subsided.

I would run the unit with cold flayed picture tube board for some
time (30 min). Then mount board again. If the error on the chassis, then
you should immediately get a picture. With picture tube problems (ESF,
ERF-tubes) the familiar error is back, since the pipes so the 30 minutes
was not connected.

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