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 أعطال وصيانة تليفزيون-Repair-TV-TOSHIBA

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عدد المساهمات : 2369
تاريخ التسجيل : 16/06/2010
العمر : 56

مُساهمةموضوع: أعطال وصيانة تليفزيون-Repair-TV-TOSHIBA   الخميس يونيو 17, 2010 11:43 am

Toshiba 29CJZ8UR, ch. CCP-6400S

Ingredients: MICRONAS SDA6001 B12, TA1360AFG, gm6010-LF, SM5301AS, D64084GC,
MST9883C-LF, TC90101FG, ENV59DA7G3 - tuner, MVCS 52, CXA2189Q, MM1631A,
TA8246AHO, LA4525, AN5523, STRX6769.
Symptoms: The TV does not is in standby mode. When you try to turn begins to
blink green LED. Identified a breakdown in D303 15c with TDKS nutrition
personnel AN5523. Strongly heated current-limiting resistance to dietary TDKS
in 15 and - 15V.
When ustanenii fault twice went wrong: I diodes and power IC AN5523. The reason
is more simple: in this chip is plugged D7941 ATV5. She punched in both cases.
In the absence of chips in the markets it simply remove. The difficulty is that
in the scheme of the circuit shown in different blocks and fast circuits can
not be identified.
Toshiba 2150XS and similar to BP STRZ2152
It is on this model three times already met: arbitrary power output row key, as
there is no run BP , Background noise when working out of the TPI. Try soldered
BP HOT-part, if the solder behind the press, and fed to clean the place
elementwise rations. Tedious but it is a guarantee of quality repairs. These
exfoliated rations when they maintain the integrity of the visible, ate a bunch
of nerves, time and tsut tsut detalek ;-). I wish to colleagues not to step on
the data "rake".
Below I give tension to microseconds, the case is "-" a network of
electrolyte.
1 .--- 260 pp in DR and 260 in
2 .---+ 145v RR and 120 in DR
3 .--- housing
4 .---+ 3.6 vR.R. and 3.0 vD.R.
5 .---+ 5.0 in RR and 4.6 in DR
6. --- 5.6 in RR and 5.5 in DR
7 .--- 4.9 in RR and 4.6 in DR
8 .---+ 1.2 in RR and 1.2 in DR
9 .---+ 15c RR and 9.8 in DR
10 --- 6.4 in RR and 3.1 vD.R.
11 and 12 0volt
14 .---+ 155v RR and 115 in DR
15 .---+ 165v RR and 125 in DR
Microseconds on this datasheet not found a map of the stress sometimes helps
out.

TOSHIBA
21CZ3R ch. S3E

percent - 20C3ERAPE / 8801CRCNG6DJ6
BP - STR-G8656, HR - LA 78 040 audio - LA 42 052
TDKS - BSC25-N0349, HOT - D2539, TUNER - ENV59DA7G3
Burned ms STR-G8656 power supply, replaced the STR-G5653. After replacing the
TV worked for a few minutes and then did not respond to remote, AV output on
the display icon. When checking the power supply was heard what turned out to
be defective then shelchok S883-560pF/500V. After changing to 1n/1kv it worked.

[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]


TOSHIBA 15LZR17. Ingredients: Processor Q100 ERAPFS8891 8891CPBNG6JC0,
EEPROM QA02 24C08, HR Q301 STV9302B, sound Q610 LA42351, tuner H001
TAEM-G109D-11pin, TDKS T461 BSC23-N0104 (the second line on the sticker
TFB4125JG, the third line TF-0147-0JG, fourth line 061016-11), line transistor
Q404 2SC5884, chip in the power supply Q801 STR-W5753A
. The scheme of the power supply without optocouplers. Fault: The image after 5
minutes of starting SLAMS (relax). After replacing STR-W5753A
and work for 2 months - repeat, again replaced again after 2 months of
repetition. We are trying to blow the radiator with STR-W5753A
cold air - the image is restored. Apparently the chip is overheating due to the
fact that it is in an unstable mode.

Solution:

While not a substitute STR-W5753A, Instead of
trying to put the SMD capacitor 0.01 uF S880>>> 0.047 uF film
capacitor x 50V, and GND and between 5 foot STR-W5753A
(Vcc) to solder the zener 36V 1W and DZ36V0 (we use the solution to the chassis
SCG-1316A-H2 JVC AV-21LMT3). . After the trial inclusion, we find that flapping
occurs once and disappears after 30-45 seconds. And then a stable job. Next,
unsolder S864 x 220 uF 50 V, and solder in a capacitor instead 47mkf x 50V (use
the solution to the chassis SCG-1316A-H2 JVC AV-21LMT3). After re-enable the
defect is not observed. As a supplement, according to the service from JVC can
byullyutnya paralellno C864 solder film capacitor 0.01 uF x 50V.
Somevayuschiesya can once again set a new re- STR-W5753A
with these decisions. In the experiments,
it is recommended to control the temperature of the heat sink and to seek new
solutions to reduce the heating temperature cooler than the factory schema.



TOSHIBA 21G3XR ch.S8E.
TMP87CK38N-3560, TB1231CN.
Problem: weak, muffled sound, even at maximum volume on the scale of
adjustment, with a good izobrazhenii.Ne mode Q622, Q612. On the emitter Q612 -
2,5 v must be 0 for the scheme to call. - 11.4v, according to the scheme - 9v.
Checked the Q612, 622, surrounding the diodes - all at the anode
ispravno.Okazalos D612 filed 11,5 v instead of 9v, green wire from the
collector of Q421, according to the scheme from the emitter (sweat factory, the
repair was not). Posed scheme, the sound of the norm.
Can only guess how TV worked all these years.


TOSHIBA 2185XR ch. S5S
defect: does not turn, try the power supply occurs at the network, then
silence. when you try to turn napruga not rise above 10-15c. when the load on
the short-circuit continuity short-circuit not detected at all, it seems that
the problem in the primary power supply circuit, as no overdrive, and food does
not want razbotat. but it is not, in the horizontal line razverke transistor
emitter is connected directly to earth not as the standard version and a
powerful diode, and with the full breakdown of continuity in the row
traznistora diode 110 in the nutrient. short-circuit Nutrition is not detected
because of the diode connected in the emitter circuit of transistor row, given
the inclusion of a standard not lower case of the transistor, can detect
long-punched his fault falsely picking a primary power supply, as happened in
my case


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