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Set will not turn on, red led just blinks

Found hor output shorted. Replaced and set still will not power on and new output is still good. Model of set is J27F636 (RCA brand TruFlat CRT)

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Check the fuses...............sodeep

Posted on Jun 17, 2009

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1 Answer

Set will not come on, red led just blinks


Try looking at the horz transformer circuitry

Jun 17, 2009 | Televison & Video

1 Answer

Power LED blinks red


it is a bad fan. it also could be a power supply. Quite often the real problem is dirt clogging up the fan(s) to the point that they need to be replaced. Operation of the set in a dirty environment is not a good idea

Feb 26, 2008 | Sony KDS-60A2000 60" HDTV

1 Answer

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

2 Answers

Will not stay on


RED light is protect circuit = do not disable !
Look for C702 near flyback transformer - might be hidden in
glue = check it = if shorted, replace 102K / 2KV with 3KV =
Sony part # 1-161-754-00 and replace E994 pico fuse.....T.

Nov 08, 2007 | Hitachi 60UX54B/55K 60" Rear Projection...

4 Answers

Tv trouble shooting


whenever any fusible resistance fails means there is a short ckt in tv. failure is mainly due to main filter cap or rectifire diode os switching ckt failure(here as you cleared str.) remember while servicing power supply isolate hor. section for safety purpose.& connect it only after power supply output is ok &after checking parts in hor. ouyput section. if this seems to be ok then go for hor.output ckt failure like hor output,flyback transformer & cap& diodes connected with it.

Oct 02, 2007 | Televison & Video

1 Answer

Loud pop and picture is no longer available.....


blown resistor (42ohm) replaced this and it imediately blew it clearly shows that there is a short circuit in your tv. if you are a tech person please proceed as follows. 1 isolate power supply from hor.output section. 2 now check power supply section.i.e. switching tran., cap..diode etc. 3 if it becomes ok check power supply output. 4 if output is ok then check hor. output section.i.e. h.out tr.,cap& diode in eht winding. 5 check print near eht. 6 at finally eht. 7 see every thing is normal now. now reconnect power to hor.section. put on tv. good luck.

Sep 24, 2007 | Philips 7P6041W TV

2 Answers

32v434t dead


please go according to procedure 1 isolate h/output section supply. 2 check power supply output is ok if not repaire it. 3 after power supply is ok 4 check hor osc, driver &output if problem repair it. 5 check for loose contact or print break. 6 connect supply to hor section. set will work fine. good luck.

Sep 21, 2007 | RCA 32V550T 32" TV

2 Answers

No raster no audio,Zenith SJ 2065S5


as horizontal transistor gets very hot so no eht so no raster &no sound due to nosupply to vif & tuner. as hor output is getting hot please isolate supply to hor. section & check power supply output is ok as due to high voltage h/outout may get hot & demaged. if supply is ok check for leaky or short parts in hor output. 1 hor. output transistor itself if it is replaced that may not be of proper matching. 2 diode& cap.in eht section. 3 clean print near eht. 4 moisture near yoke due to rain in rainy season only. so keep it hot for few hours. 5 at last if all are ok eht or fly back transformer. re connect power to hor output after rectification

Sep 18, 2007 | Televison & Video

5 Answers

Horizontal output transistor keeps failing


The horizontal output transitor is always connected to the primary winding of the flyback transformer (via collector) and also to the horizontal deflection coil via an electrolytic capacitor. The most likely suspect for damaging the transistor is the fylback transformer. In some countries there are electronic stores that test flyback transformer by winding a few turns on the ferrite core and applying a test voltage. This test will only test the secondary. The primary winding is difficult to test for turn to turn short because the resistance is quite low and you do not know the 'good' resistance.

May 15, 2007 | ViewSonic E70f 17" CRT Monitor

1 Answer

Lg 5552 v set is dead


try to resolder all points in fbt including fly back trans itself area also resolder the crt pcb area i had the same problem the reason was cold soders also put a good 2sc5297 for hor out.

Dec 02, 2006 | LG Studioworks 552V 15" CRT Monitor

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