Question about Durabrand DWT2704 TV

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DEAD SET First no vert just a line in the screen,next morning turn on and dead set no line but just low a wheezing sound when i plug it up. cannot find a sam's on this set thanks in advance Jonesy82@cox.net

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Try addressing the vertical problem first. If the vertical IC has shorted, it can prevent the set from starting properly. That being said, it is also possible that there is a power supply problem (regulator) that was not providing the proper voltages for the vertical circuit. If that is the case, addition troubleshooting needs to be done with test equipment. Figure on a parts cost between $12-$25. Add in the local labor rate for the total repair cost.
Dan

Posted on Jun 03, 2008

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Have sound but no picture. Turned TV off last night and when I turned the TV on this morning there was good sound on all channels, but there is no picture. Just a black screen


is hv circuit problem a power transistor to 25KV transformer maybe dead, check the HV Circuit, or 1XXV output from Mains transformer the fuse maybe dead

Mar 11, 2010 | Sony KV-36XBR450 36" TV

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Need info wont turn on


the set will not operate with out proper vertical signal/deflection. you may have bridged pins together when resoldering. use a 25w or 35w soldering iron so as not to lift copper traces from pc board. always use solder wick to remove old solder and DO NOT keep on pad to long. mch

Feb 20, 2009 | Hitachi 36UX01S 36" TV

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TV is DEAD without any prior symptoms


opening the tv you will see a fuse  it is surely open - you have to chenge with the same type and rating- pay attention to make this
just after did you disconnect the pewer cord from ac outlet- delfo

Mar 21, 2008 | Televison & Video

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Blinks twice pause blinks 4 times


SYMPTOMS
Dead or Shutdown symptoms.
RESOLUTION
Dead symptom reported to be caused by the following:
1. Dead.
Found Q601 & Q602 shorted, R615 open, and IC600 on the A Board were the cause of the symptom.

2. Dead.
Found D614, Zener diode, on B+ line was shorted.

3. Set shutdown and the standby LED blinks 3 then 5 times.
Found 200v line was low. Disconnected CN706 on the C Board and found 200v now
present on CN706/pin 7.
Found: IC702 (C board) shorted the 200 volt line.
HQ Comments: C541 on the A Board could become defective if the 200v line is shorted since
the polarity on the capacitor will become reversed. R553 fuse resistor could also be opened
on the A Board.

4. Error code of 4 blinks .
Dead set press power button you hear the relay and you see red led flash 3 times and stops? Has no HV or other action. Tech removed the back as no 200 volt supply, did unplug CN706 and now has 200volts. Tech did remove the IC702 and same it comes up so needs this IC.

5. Dead. 5 blinks then 3 blinks. Found shorted Damper diode D504. Q502 has a built in damper, as well.

6. The TV does not turn On and the LED flashers 9 times.
Found one side of R610 open on the Base of Q690 on the A board.

7. Dead, 9 flashes, Q606
Would not start when cold, has stand by 5 but relay never energize.
No response from front panel or remote controls.
9 blinks is not in service manual.

Found Q606 (Zero Det.), on the A Board, had no soldered on the collector
of the transistor causing an intermittent connection.
Soldered the collector of Q606 and set returned to operation.
HQ Comments: Also refer to E30968554.

8. Dead. 5 blinks or 3 blinks
Found on the A Board D611 in the Power Supply open, and Hor. Output Q502 shorted.

9. Found Power Supply components D611 shorted causing Q600, Q601, and R615
to fail on the A Board.

10. No picture or sound. Standby flashes.
Found Q512 (Pin Out) shorted. on the A Board.





11. Dead. No sound or picture.
Found the FBT and Q502 were shorted, and R615 open on the A Board.

12. Dead
No power, Stand by light flashes 4 times.
Found T604 and IC601, replaced.
Found D611 on the A Board was the cause of the symptom.

13. Dead.
Found D534 shorted on the A Board.

14. Shutdown 4 Blinks.
Replacing R595, OCP Latch Q532 on the A Board, fixed the set.
PN 1-247-891-00, 330K 1/4 watt.

15. Unit shuts down after 15 mins.
Immediate shutdown - sometimes it give a 3 blink, sometimes nothing.
Found R595 (330K) was open located in the Q532 OCP Latch circuit.
R595 P/N 124789100 330k 1/4w

16. Won't power up. LED Blinks 4 times, B+ is very low
B+ is at 49V, +15/-15 only coming up to about 1 volt.
Wth Hor Out disconnected B+ only comes up to 50v.
Found D611 on the A Board was the cause of the symptom.

17. Intermittently does not turn on
Found a intermittent C633 on pin # 3 of IC600.
C663 P/N 113647911 Film cap .001uf 100v



Billy

If you need the service manual contact me at:billyjones@fletchersite.com

Jan 27, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Power


if the tv set have no sound no picture, they call it dead set your tv need a repairman technician to trace your tv what was part was damage. but if your tv has standby mode mybe you entered the timer code.

Aug 20, 2007 | JVC AV-32D305 32" TV

1 Answer

Orion FTDV 2004 Dead Set


Question, when I clicked on this I clicked on a problem for a Sony KV27S10 but your text say's Orion, is it a Sony or a Orion?

Aug 18, 2007 | Sony KV-27S10 27" TV

1 Answer

3year old Panasonic ct-32sx12f dead?


Sure, Why not? It is worth the effort. If the set is 'dead', it is the easiest to repair.Only 'tampered' sets pose problems. It could be a simple blown Fuse, or the Power Regulator IC. This should not cost you more than $100-150 as Technician charges + 15-20$ for spares. It could also be a defective Horizontal Outut Transistor and short cicuiterd FBT, (tho' it seems remote), but if yes, add another $100. definitely worth calling a professional techie

Aug 22, 2006 | Panasonic CT-32SX12 32" TV

1 Answer

Vertical hold


You dont have enough vertical sweep!! Best thing to check is the vert output device and I think its an IC . BUT before that check the b+ going to that device and see if its low. I will run through a silicon diode right next to the ic. Measure both sides of the diode and if theres a big voltage drop then the diodes bad. Now also these sets are common for the b+ filter cap off thge flyback transformer. Its the voltage line that feeds that diode and the vert output section. Now measure all caps out of cucuit as most will measure good if you dont. Also just for giggles right nrxt to the big IC that has the vert ,horizontal video and sound drive there is if im not mistaking the vert parts start with c4-- or the ic will be ic4-- Its a small cap that will sayc4-- attached to nothing but the ground and one pin of the ic. I've seen this cap cause all sorts of vert problems in the past as its the vert waveshaper capacitor for the vert osc/drive. Good Luck

Apr 17, 2006 | Sharp 25VT-J100 TV

1 Answer

TV screen comes in and out when first turned on.


is the video going in and out or is the whole set with the sound going off as well. If the sound stays its a cold solder connection on the vert output device or the B+ line feeding the ic or if the whole set is going on or off its a cold solder connection on the Horizontal driver transformer. Without more info its hard to tell.

Apr 02, 2006 | Sony KV-32S65 32" TV

1 Answer

Picture squnches into a thin line in center of screen


this set is known for cold solder connections on the vert output as well as the b+ supply line comming from the flyback xformer that supplys the voltage to the drivers. It could also be the vert output capacitor, The two waveshaper caps in the predriver stage of the vert, the filter cap off the flyback or the vert drive b+. Without going in and getting a schematic it will be hard to say. sets like that unfortantly these days are throwaways. NO NO NO dont throw the set at me I did mean that way!!! Its the cost factor of repairing getting the parts as well the the service diagram. it all adds up.

Mar 25, 2006 | Emerson TS1997 19" TV

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