Question about Toshiba 65H81 65" Rear Projection Television

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Str reg. When turning set on, red light goes to continous blinking. What does the str reg. look like? I have the unit out of the set. I also would like to know how to remove front screen.

Posted by agd111 on

  • Anonymous Dec 21, 2007

    I have the exact same problem as yours with my 65H80 Toshiba. I wonder how did you resolve your problem? Thanks for the info.



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Posted on Mar 29, 2010



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No need to take the front screen out. The power deflection board is messing up with that red light.

Posted on Nov 07, 2008


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Sony wega tv kp 51ws520 keeps turning off after the standby red light blinks 10x's

problem with str ic need replacement has an internal short need a tech to do it

Jul 08, 2013 | Televison & Video

1 Answer

My standby light comes on and blinks seven times repeatedly but no picture.

Seven blinks of standby light in Sony tv denotes that there is a high voltage problem. It is otherwise called as high voltage shutdown.
Normally 32" tvs has an anode voltage of 27,000Vdc approximately. If it rise beyond its limit, the microcontroler in your set will detect the high voltage, and will prevent it from working further, to protect you fro X-Ray emisson as well as to protect the TVs other components inside the ciircut board from further damages, and will inform you about this fault, by seven continous blinkings of standby light. Now you are seeing this.
The final anode voltage depends very much on the input DC voltage to LOT [Line Output Transformer]. Usually this supply rail will have a voltage level of 135 to 140VDC. If it rises above this level, extra high tension voltage generated by the above said LOT will also rise proportionaly to high, which will goes to the final anode of the picture tube. If this voltage goes very high, there is a chance to radiate X-Rays from the picture tube which will harm you. This high voltage protection also known as X-Ray protection.
The main reason for this fault is related to the regulated power supply section inside the circuit board of your tv. To repair this, you have to open the back cover of your TV. Take every precautions before doing anything to your TV as it is an electrical equipment, which generates high voltages inside it while it is working, and there are voltage points as high as 30KVDC [30,000VDC], wich is very dangerous.
Just open your tv, and locate the power supply section. It is very easy to locate, as the main supply wire goes into it. There will be a regulator Ic, normally Sony sets have STR numbered ICs are used in that section. This regulator will heat up to 75degreeC, and there is a chance to get loose the solderings on its leg points, as continous heating and cooling process. Just look for any loose solderings on the solder side of your TVs power supply section. In practice, I found this in too many Sony sets, during my 36 years in this service field. It is very difficult to detect the exact loose point, so I always do is, just resolder most of the suspected points on the pcb, by applying a little more solder, and will retify the problem. Moreover, just replace small electrolytic capacitors fitted on that board, because some of them may cause this voltage rise. The DC supply voltage rail, will be between 135VDC or so. Any fault in the components fitted around the above said STR will cause this problem. So check every components, and replace if needed. If this does not help replace the STR with same type and number.
Go further with confidence. You can and you will. Wish you sucess. Take care. OK.

Nov 18, 2010 | Sony FD Trinitron WEGA KV-32HS510 32" TV

1 Answer

Sony mod# KV-34HS420 - won't come on - red led blinks 7 times...

how many times does the light blink it is very important you mention it so that i can be able to help you.if it is blinking continously then that means your jungle ic301 the ik video path is defected have a tech look on your set for repairs,good luck

Jul 12, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

3 Answers

Same thing

normally this happens when there is too high of an audio output. To fix this, change the system to tuner and turn down the volume (if it allows you to) and then unplug the system. Plug back in and it should work. If that doesnt work, try unplugging for 15 min to allow it to reset.

If you need further help, reach me via phone at

Jun 10, 2009 | Sony STR-DA555ES

1 Answer

No Audio & Video red light blink continously.

hi first of all u should check ur transistor connections.Check your Horizontal and vertical output transistors.You should also check the horizontal and vertical yoke connections as well as your low voltage regulators.... if any of these got damaged u should purchase a new one.. but try to purchase with the help of a tv service assistant...thank u!!!
rate me

May 29, 2009 | Sony KP-57XBR10 57" Rear Projection...

1 Answer

My 605 turns off and red light blinks when volume goes past 58

Shorted speakers can cause the unit going on protection mode (the red light blinking) when a certain volume is reached.

Test with a set of replacement speakers.

If it is not the speakers, it is probably transistors in the amp final or something nearby. Test also input output board.

Apr 27, 2009 | Onkyo TX-SR605 Receiver

1 Answer

Kdf-60xs955 red continous blinking lamp light

It's in standby mode.

Do a reset and see what happens

While holding down the reset button on the remote
Press the power button on the tv
(The tv will turn itself off the back on)
Now release the reset button

It sounds like the lamp needs replaced.

Please rate this a fixya

Jan 22, 2009 | Sony Grand WEGA KDF-60XS955 60" Rear...

1 Answer

Turning on shuts off red light starts blinking


You have defective Oscillation Circuit maybe you have leak small parts like capacitors and resistors. and also the HOT Area.


Dec 04, 2008 | Televison & Video

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