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My tv after plugs in clicks and sounds like it wants to come on and then the lights blinks in front. i need to locate the regulator ic so i can see if it is ok or the capacitors so i can replace

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  • duwop56 May 08, 2010

    i have a toshiba tp55g90

  • duwop56 May 08, 2010

    i have a tobshiba tp55g90 projection tv

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  • Master
  • 1,469 Answers

Hello,What type of TV and the make? So i can send you crciut diagram to stress it.

Posted on May 08, 2010

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We have no picture or sound. The sttandby light blinks 7 times then a pause and blinks 7 more times. it keeps repeating this. This is a Sony Trintron TV


Hello
Seven blinkings of stanbylight in Sony sets denotes a High-Voltage shutown problem. Not means the high line voltage, but the fault inside the tv itself. You haven't mentioned about the model number of your TV, yet I'm going to describe you considering this as a standard Sony problem.
The fault is mainly due to the internal power supply regulator section in your TV. It is now supplying voltage more than normal that it is meant for, as a result the EHT [Extra High Tension] voltage to the final anode of the picture tube goes higher than normal, and the microcomputer Ic inside your Tv detects this voltage difference and giving you the fault symptom in 7 continous blinks. That Ic is so programmed such, it will blink with certain times according to the fault comes inside, and helps us to locate the faulty section without opening the TV.
As I said above the fault in your TV lies on the power regulation section. You just open your TV and locate that section, which can be easly located as the main power just goes to that portion, and there will be a regulator normally Sony uses STR***** type IC regulators, which will be screwed onto a metal heatsink to radiate heat from it while it works. These will heat up to 80 degree C, while working, and the heat generated by this ic can cause loose solderings on its legs. You resolder its leg solderings, and suspected solderings around it, by applying a little more solder. In most cases this will resolve the problem. Ok.

Nov 13, 2010 | Sony Televison & Video

1 Answer

I have a 65 inch Mitsubishi rear projection HD TV. The screen went blank today. I have cable hooked up to the componant input and I get no sound or audio. If I hit input a few times I get static sound...


Does the input menu appear on the screen when you press input? If so its probably the IC Regulator 9v supplying the video board. If the green light on the front is blinking then powering off it is one of the 7 capacitors and you should just replace them all, 30-35 bucks. If the power stays on and its just your video isnt coming on(audio as well) it is the IC Regulator. Mine called for the part - BA09FP IC REGULATOR 9V It is about half the size of a pinky nail and located directly behind the video input board in the back of the tv. It has two prongs on the left side and one wide tab on the right. It solders directly to the top of the board and not through it. It says BA09 on the chip. This fixed the problem for me.

Aug 16, 2010 | Mitsubishi WS-65613 65" Rear Projection...

2 Answers

The power comes on and then turns off and the front green power light blinks.


There is a small IC in the power supply section,
not the IC regulator that's the problem.

Jan 06, 2010 | Philips 32PT6441/37 32" TV

1 Answer

No picture or sound


Dear belladionne1,
Unplug TV from a/c outlet for 2-3 minutes...plug back in. Turn TV on; do you hear any clicking sounds (relay)?

NO: Check voltage on pin 1 of IC702. No voltage, suspect IC709 (5 volt regulator). The IC is on the PCB- Signal, part number 266P922010.

YES: Suspect Vertical IC, IC401 on deflection PCB( the one on the right. IC located towards front of board, on a heat sink, standing up.

These are the MOST common failures for your Model VS-585R.

I hope this was helpful, big IRISH.

Dec 29, 2009 | Televison & Video

1 Answer

I have a problem with a proj. TV mitsubishi model WS55809 1080 series. When I push the power bottom the click relay sound but doesn't work (rapidly


try this and let me know what you find:

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER LIGHT COMES ON FOR A MOMENT AND GOES OFF.

PRESS AND HOLD “device” and “menu” buttons on front of tv for at least 5 seconds and then release both together.


Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem


******2, then 2 is most common---usually means one of the fuses that protect the Convergence IC or IC’s is blown---set will detect no voltage to convergence IC and shut down.


SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM

If this helped you rate this solution as I do this here for free.

SD TECH

Dec 11, 2009 | Mitsubishi VS-50605 50" Rear Projection...

1 Answer

I turn the tv on it clicks on then it clicks off about 5 seconds later


HERE IS WHAT TO TRY FIRST:
MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:


UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER LIGHT COMES ON FOR A MOMENT AND GOES OFF.

PRESS AND HOLD “device” and “menu” buttons on front of tv for at least 5 seconds and then release both together.


Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem


******2, then 2 is most common---usually means one of the fuses that protect the Convergence IC or IC’s is blown---set will detect no voltage to convergence IC and shut down.


SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM

let me know what error code you detect and I will try to tell you what is needed to repair the set.

If this has helped you rate this solution as I do this here for free.

SD TECH

Dec 05, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Sony Trinitron Wega TV keeps shutting off and red


There are two Ic's that need replacing on the Deflection Board (D) board.. These regulate power for the High Voltage and Chopper PWM circuits. The IC location on the board are IC6501 and IC8002

Nov 19, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

2 Answers

I have a Sony Wega KV-34HS420 TV that takes several tries to turn on. When I push the power button or remote power on I hear the normal click and the sound comes on for 3-5 seconds but then I hear a second...


Since the set appears to "recover", it suggests either a poor solder connection or bad cap somewhere in the power supply. The 7 blinks indicate the problem circuit is in the horizontal area. Check the regulator (STRxxxx) IC in the power supply. If you do not have experience working with TVs, please refer this repair to a shop. The regulator IC costs around $25.

Dan

Nov 16, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

No picture or sound


Sounds like you have bad solder connections on the 5 and 9 volt regulators on the power board. They should be marked 7805, 7809, and possibly 7812. The 78 on these IC's mark that they are positive regulators and the other 2 numbers signify what voltage they are. Very common problem.

Feb 18, 2008 | Sony KV-35S66 35" TV

2 Answers

JVC AV-27020 TV Blinking LED, Static Electricity on tube but no sound and image


Sounds like a bad main regulator IC.. Try putting a 100 watt light bulb across the main AC fuse, turn on the set and see if it will stay on longer. If it does, replace the main regulator iC. If it does not, then it could be almost anything in the sweep section of the set, and or in the regulation circuit of the power supply. Look for slightly swollen capacitors in the set. good Luck please do not forget to rate this thread.

Dec 10, 2006 | JVC AV-27020 TV

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