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Sony KV35v36 Picture Out Audio On

 
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Vortex
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PostPosted: Sat Jul 02, 2005 4:30 pm    Post subject: Sony KV35v36 Picture Out Audio On Reply with quote
Hello, my Sony picture goes out every 15 to 30 minutes, but the sound stays on. Then I just turn it the set off, then it on, and it stays on again for 15 to 30 minutes.

Any Suggestions?
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Al_Dodge_Bundy



Joined: 05 Apr 2005
Posts: 93
Location: Netherlands
PostPosted: Sun Jul 03, 2005 12:22 pm    Post subject: Reply with quote
Often these errors are related to a bad solder joint on the main-pcb or crt-board.

You can check this by gentley tapping on some parts on these pc's with an isolated screwdriver.

Whenever you tap, and the picture goes dark, you're sure it's a bad solder joint and you'll need to re-solder it.

Good luck,

Mark
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PostPosted: Thu Nov 30, 2006 10:00 pm    Post subject: Re: Sony KV35v36 Picture Out Audio On Reply with quote
Vortex wrote:
Hello, my Sony picture goes out every 15 to 30 minutes, but the sound stays on. Then I just turn it the set off, then it on, and it stays on again for 15 to 30 minutes.

Any Suggestions?

the problem is may be the power supply or hor section, check the smps is working good , ie supply voltage......if supply voltage is currect and no problem then suspectthe horizondal out put transistor of yoke, flyback transformer or fly back capacitor
from
indian tiger....will be soon
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Guest
PostPosted: Thu Nov 30, 2006 10:03 pm    Post subject: KV35v36 tv Reply with quote
Dont buy sony products......its the most bullshit systems,,,, and is very hard to repair.
indian tiger
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Guest
PostPosted: Thu Nov 30, 2006 10:03 pm    Post subject: KV35v36 tv Reply with quote
Dont buy sony products......its the most bullshit systems,,,, and is very hard to repair.
indian tiger
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Guest
PostPosted: Thu Nov 30, 2006 10:09 pm    Post subject: sony kv35v36 Reply with quote
The sony is the most bullshit systems .... in my experiance....they want to miss lead the technitians wit differnt , complicated or missleading information about the parts or same parts with differnt part no: , inferior parts or out of range parts.
I have 17 years of experiancing in repairing tv....
i will soon with the solution that how to repair this tv...
I have the cercuit diagram for high voltage or critical areas
I will be soon ............
Inidan tiger
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell
PostPosted: Fri Dec 01, 2006 4:42 am    Post subject: Reply with quote
Solder up the verticle ic. Not cold joints, bad solder joints. Once and for all wave soldering sucks! A good soldering iron and a good amount of heat. There is no 'bad joints." Lack of heat on the solder.
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INDIAN TIGER
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PostPosted: Sat Dec 09, 2006 8:27 pm    Post subject: Re: Sony KV35v36 Picture Out Audio On Reply with quote
Vortex wrote:
Hello, my Sony picture goes out every 15 to 30 minutes, but the sound stays on. Then I just turn it the set off, then it on, and it stays on again for 15 to 30 minutes.

Any Suggestions?
SONY TV KV32V26, 32V36, 34V36, 35V36,35V36C, 35V76,37V36M
SMPS section.

Problem: dead set….
(TAKE A BULB OF 60W TO DISCHARGE AND CHECK THE SMPS)
1.Remove from power and disconnect degaussing coil and main board.*** BE CAREFUL with the capacitors c 606 ,c607 and c 643. discharge it after remove from power.
2.Remove the rectifiers D615,D645,D644,D643 also remove D648 Zener diode(EZ0150A) and replace capacitor C643 with 220 mf,200v or higher.. also disconnect the diode D641 and D646. which is connected to the secondary of the SMPS transformer.
3.Now check the smps transistors Q601 and Q602 (2sc 4834MNP) if its bad replace it with any transistors with same parameters. And check the resistor r607 and r622 check the varistor VDR601 .(Short the legs of varistor until the repair is complete). Replace resistors r615,612 ,r613,r614 which is 220k.and R617,616,610,609 at 22ohms, Check the resistors R611, R 608, ,623 ,R607,R622..
4. Replace capacitors c609 ,0 .47 and c610 , 0.47
5.check the diodes D603,604,605,606,607,608,609,610.(1ss119) if you can replace it with almost same parameters , which is used here as voltage stabilizers to transistor Q601 and Q602.
6. Now disconnect the resistor R607 and plug in to mains.
7.Check the voltage at point R607 +ve to R623 –ve. … ie ….floating negative.( negative on the primary side of the SMPS transformer is called floating negative, Never check multimeter between this side and secondary side)The voltage will be ….
8. If the voltage is around the diodes D602 and capacitors C 607 and C606 is ok …..but not 100%.( because still the any one of the bridge in diode D 602 may be defective) If no voltage then suspect the diodes, fuseF601 or the harsh filters.
9.Now connect R607 and plug it to mains, check the voltage (AC) in between 5 and 6 of the transformer T605. If “yes” the transformer is oscillating , now check the voltage between point c641(dc). If “No”then check this rectifier D641 and associated circuit .including R671,672,670,660,667,666. If “yes”the audio voltage is ok
10.Now check the voltage (AC) at point 7,8,9 of the transformer T605 . If yes then check voltage at point 5 of IC641 (9v regulator) to ground ,If “yes” check the pint 3-4 to ground which is about 9v(DC) .If no then suspect ic 641 to resistors R663,664,665 or D646 .
11. Now check the voltage(AC) at point 10 and 11 of T605 If “yes” then connect the diodes d615,644,643,645 . (THE ZENER DIODE D648 IS REMOVED) the voltage between c643 this is the main +ve voltage. If ‘ no”then suspect diodes If everything is” ok “then only connect the D648 , which normal case you don’t need this zener diode.connect the 60w bulb between B+ and –ve.
12. If everything ok connect to main board, after connect main board any problem suspect horizondal transistor,yoke,flyback transformer , fly back capacitor c509,c527,c511 ir damper diodes D502, 503 504 (ERC06-1SS).
Note:
Diode D602 can replace with 4 IN4004 or similar (Bridge)
Diode D644,643,615,645( D2L20U0 ) can be replaceable with high efficency high voltage recifires.
Diode D646 (D10sc4M) can replace with high efficiency low volgage full wave diodes
Diode D641 is (RBA-1004B) can replace with high efficency low volgage bridge.
IC641 is S!-3090CA is 9v regulator.
IC 642 (NJM78MOS) is 5v regulator.
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Frank M
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PostPosted: Sun Jul 15, 2007 6:04 pm    Post subject: Capacito C615 on Sony KV35V36 power supply G board Reply with quote
C615 is burnt out on the G board (power supply), and I can't read its value to know what to replace it with. Can anyone help?
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell
PostPosted: Sun Jul 15, 2007 6:22 pm    Post subject: Reply with quote
.039@630vdc
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