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 أعطال وصيانة تليفزيون-Repair-TV-VITYAZ

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

مُساهمةموضوع: أعطال وصيانة تليفزيون-Repair-TV-VITYAZ    الأربعاء أكتوبر 26, 2011 3:32 am

VITYAZ 37 CTV 720-07 ch. MSH-37


Prtsessor - ST92T195D7B1 pasted a sticker on it that says M195VB6


Video - STV2249H


No reception, no sound. When you configure the machine skips the program. Circuit without the core. At the same time on low output appeared pictures of excellent quality. This can be seen, as you apply for low input of another television set.


The entrance to the service: STBY - M - OK - MUTE - STBY


Found "by hand" two cells:


00E0 = 84 - is welcome


00E5 = E0 - is the sound


's working proshivochka VITYAZ 37STV720 -07rabochaya.rar

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KNIGHT ch. MSH-92S


Problems correction,. The raster is stretched, normal service menu is not visible, see only the edge. Replaced
in the modulator correction, all the capacitors, as well as for LTL + B
reaction not changed the diodes in the modulator, the raster was more
or less normal. Ordered memory and restore all. He went into the service and adjusted. It turns out that by replacing the diodes need to prescribe the memory, or it poodinoky case? Before replacing the diodes prescribed memory, the result did not change. Guilt were actually two diodes. Then again, had to alter memory and make adjustments to the service.

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Knight 54CTV-6361


Composition: SDA555XFL, 24C08, TDA8844, SC-B-564E, PET 19/08.


flies every 5-10 days proshivka.Reshil problem in the tv - solder tank 22 * 50V parallel pin 1-8 24C08. Stood on the run 14 dney.Vse OK.

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Knight 54CTV-6361


Composition: SDA555XFL, 24C08, TDA8844, SC-B-564E, PET 19/08.


No picture and sound. Included - the minimum horizontal, vertical, and there is no signala.Yavny rally driver.


The service corrected the geometry and the choice of the drive. Included auto-tuning - find all the programs, but the picture


is not very clear (focusing) and a little red predominates. Checked B + = 130V. PET food to 8.19 115 to TU. In BP resolder the jumpers - TPI-92, O 15 14 B + = 115.4 W. improved focus and clarity but the predominance of red left. Between PIN 21-22 TDA8844 found "close up."


eliminated - all OK.

///////////////

Knight 21CTV750-4 FLAT MSH-74 chassis


no inclusion in the working mode.

Problem: TV does not leave the duty room in the office. the state. The power supply is working. The secondary voltage is normal. 3.3 volts and 1.8 percent at 3.3 volts and the memory comes. Changed percent, and memory. The result is negative. Signals from the remote and buttons on the percent do.

was guilty quartz ZQ201 (20,250 MHz), after replacement TV has earned.


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