أعطال وصيانة تليفزيون-Repair-TV-Panasonic

Panasonic 21JT1P, ch.Z7
Processor - SDA5254-A022 (v41),
EEPROM - BR24C02,
The problem - there is no reception in the SECAM.
Firmware found on the Internet has enabled SECAM, but there has not been
configured brightness delay in Jungle.
The method of scientific spear established that included a show SECAM bit 6 at
D6, and the magnitude of the delay signal Y is set in the same 3.1 bits
(00,100,011).
At the same time was used by primitive JDM programmer in the COM port on the
diodes (see fig.) And IC-PROG 1.05 [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط] . To flash BR24C02 must
choose the type of chip SDA2526. As a replacement processor SDA5254 works fine
with a standard EEPROM 24S02S. Checked in installing this unit. Edit the bitmap
is convenient to carry in KondorProg 006 beta
(http://hackersrussia.ru/Other/Zips/KondorProg.zip), but read and programirovat
better in IC-PROG (Kondor very picky in terms of iron).


[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]


Panasonic
TX-21V80T Ch. MX-5 (TNPH0213)
Composition; MN1871681TLK controller, 24C04A memory controller, M52770ASP video
(videohromaticheskie jungle), D2499 key line scan, the power supply sistoit
deskretnyh of elements in the key role in C5241 HOT side contains PC123, 3131
optocouplers, D789-2 units, C945. Nutrition 90 lines in the hot side of the
power supply.
Fault: The included TV is sound, audible to switch channels with the remote
control, volume control with remote control as well as with Clara in the norm.
The screen image is heavily tinted, almost silhouette image. Adding to the
acceleration of low-contrast image showing TDKS. The color scheme in the norm.
M52770 were filmed on the testimony of stresses. When compared with the
reference revealed no voltage output video processor 40. Check break this chain
revealed R503 170kom, and break R510 SMD 56kom.
Replacing the malfunction of the elements to recover the vehicle.
Here is a table of electrical parameters and M52770 firmware memory Poniproge.

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

Panasonic TC2990EE ch. M15M
Wheezing sound from time to time, change AN5138NK not solved the problem.
Trouble was a trimmer capacitor C243.


Panasonic TC-21L10R.
Chassis: MX-3 (TNP4G036).

Famous common chassis, I think it makes no sense perecheslyat of chips and core
elements.
Came up with problem that occurs in No sound.
Pure image without interference, switching and remote control with buttons to
normal. For low input signal path VLF just does not work. LF output works fine,
sound is. Fault is localized in the ULF.
The autopsy revealed the machine: the power supply is missing the VLF on a chip
AN5270 9noga 16 to 18 in .... Loss of resistance to power 10 ohms in this
circuit. Measurement of resistance to nine feet relative to the housing 30 ohm
TV shows in both sides of the polarity of the tester. Conclusion - the
breakdown of chip AN5270.
Such circuits do not have in stock. It was decided to make with the consent of
the owner of a TV remake for a similar chip AN5265. After the installation of
the chip made the following improvements.
1. Do not fluster (vykusit) or unsolder harness (R2301, C2304) with 3 feet
AN5265.
2. 5 foot unsolder from external circuitry and string any over 10.0 * 50V to
ground.
3. from 6 feet to 8 feet to throw a resistance 10 kOhm * 1/2Vt. T.ZH 6 feet
AN5265 series on housing solder 560th * 10.0 * 1/2Vt and 50V (instead of the
S2305) From 2305 to remove.
Everything. We have a beautiful sound with a normal control. Unfortunately
adjust the tone frequency, we have lost.


Panasonic TC-21B3EE
When you turn enters the operating mode after 2-3 seconds. sound
"buzzer" sound and picture do not. After on-off 10-15. in the duty
room and back into working mode, and run TV works flawlessly as long as
desired. After turning off and idle for several hours, all repeated.
Protection is triggered by 52 feet on TA8653N. Defective capacity to 10mkF S582
50V, the rectifier filament voltage is used for protection circuits on the
transistor Q503. Disabling protection found in different places.





PANASONIC-TX29F250T 100gerts
3 TV sets with the same defect. After 20-30 minutes of screen starts at the top
and down zauzhivitsya to 20cm. A defect in the OS. On the transition from the
upper to the lower coil wire breakage occurs due to heating Ferit. Repair:
Gently heat the glue and a hair dryer to raise the wire. In place of the cliff
to bite off a piece of wire and solder, and solder on the OS.


Panasonic TC-21L10R2 ch. MX-3.
Not included, LED on the PP does not burn. Ingredients: CPU-MN152811T6N +
S24C04; VIDEO-AN5192K-B; VERT.AMP.-LA7837; FBT-TLF15644F1 + standing D2499;
TUNER-ENV598D1F2; siloviki BP-C5253. Visual inspection revealed a burnt fuse,
solder (the machine age 13) were in perfect condition! Continuity breakdown
showed: Q801-C5253; Q802-C3940AR; Q805-A1512; D835-protective Zener diode 56
volt.S by E7-13 (mode OM) defined in the schema defective electrolyte S825 and
s805 (47 microfarads at 50 volts), one has lost capacity, and at the 2nd ESR
was more than 4 Om.C5253 not found, instead, put MD1802FX (totzhe on the
radiator and the hole, just up the findings - when soldering the wires not to
confuse the B-E of the transistor!). I believe that it is two of the
electrolyte caused this raznosa.Zamenil these details, and TV for several days,
normally rabotaet.Pri repair chassis MX-3 should be considered: Nutrition B +
output stage horizontal Sweep is not galvanically isolated from the network.
Therefore, measurements in relation to the body to produce VKSR S804 (AC
electrolyte) and MUST set D835 (56 volts) PROTECTION.


Panasonic TX-29PM1P ch. CP-521F
Switched on and after 1 - 1.5 sec. off. At the collector of Q 401 2SD2578
decaying amplitude saw a 300-350V, on the basis of an excellent signal. Checked
the "Master Kitovskim" device FBT 50H0000277 call clearly out «HV»
call to the secondary T402 35kOm. Replaced on FBT
HR80306.Vse OK.


PANASONIC TC-21FJ10T ch. GP-3
Ingredients: TDA9590H/N3/3/1541 (4th line 9590N48BW), 24C08WC, STRW6754,
STV8131, AN5522, AN7522N, TDA6107JF.
TV after the storm, not vklyuchaetsya.Fotopriemnik kOe. Replaced, tv has joined
OSD, MENU
governed by sound, and switch channels, there is no setting strongly
"snows." signaled with Balaclava
AV input on a sound and image, the color does not recognize. Replaced
TDA9590H/N3/3/1541.Vse OK.


Panasonic TX-29PN1P chassis GP4L
Fault - No sound.
Solution: Translate to TV mode SELF CHECK (self), for the press at the
same time in the operating mode button i-information on the remote (not
indeks.a uppercase) and click - / v (volume down) on the control panel appears
TV.Kak SELF CHECK verify that the factory settings, then click the network
unplugged TV. Then re-enable the network TV button then in German povitsya
labels, select the language and section E EU RUSSIAN, get out of this mode by
pressing the blue button on the TV to channels pulte.Nastroit and sound appear.


Panasonic TC-2161EE
First stopped off in standby mode, and then lost picture and sound. Defect:
flowed contact group "on" power switch.


Panasonic TC-21S10R ch. MX-3.
Not included. K / W Q801, Q802, Q805, D835. Dried C805, C825. After replacement
of radio TV switched on, there is a picture and sound, but "dances" horizontal
size. Substituted SE090 and optocoupler, the result of the former. R820 0,47
ohm to 0.96 ohm increased. After replacing all clear.


Panasonic TC-21S1 ch.
MX-3.
Fault - No reception in the first meter band reception (BL), instead of
setting it in the decimeter band reception BU.
Solution: In the study it was found that with 12 percent MN152811TZT
pins instead of just 0.7 volts 4volt.
The problem is solved by one resistor, I took the 1.5 K and at 5 volts (with
12pina 1K5 on 1pin).