Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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Board assembly or stk392-150

I have had the same problem occur today...red shadows and the red convergence will not move left or right to realign. I noticed your solution of replacing the convergence board assembly. Is this the same as replacing two stk392-150? Does this avoid the desoldering and resoldering? It sounds like the stk392-150 are about the same cost as the board. thanks

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  • Brentmitchel Jun 11, 2008

    Mines a little different, the blue is mialigned by 6 inches or so. Also the red and green is out but only by a little bit.

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That is correct. If you replace the entire assembly. No hand soldering is required, but you might still have to manually adjust the convervenge after replacing the assembly.
Let me know if you require further assistance.
Good Luck.

Posted on Apr 12, 2008

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Posted on Jan 02, 2017

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I have a sharp aquos tv model lc-32m400x. When i turn the power on via button at the back the green light comes on for about 10secs then turns to red and flashes about every 11/2 - 2secs. Any ideas.


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jan 11, 2017 | Sharp Televison & Video

1 Answer

We had a power outage and since my tv does nothing, a tiny red light says standby but nothing changes.


Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Jan 10, 2017 | Televison & Video

1 Answer

I have a 60 inch sony tv that have a red flashing on the lower left side,no picture when I turn it on and there is ringing sound.


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jan 09, 2017 | Sony Televison & Video

1 Answer

24inch Bush smart TV/DVD not working.


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jan 09, 2017 | Bush Televison & Video

1 Answer

LG 55LM4600-UC LED TV I have was squirted with a squirt gun. Would replacing the t-con board fix this tv? Please read further details.


when water shorts out something it overloads a lot of other components so the best advice is to take it in for a proper diagnosis.
you just replace a board but another board is damaged it might just blow the board you replaced and that would prove nothing

Jan 09, 2017 | LG Televison & Video

1 Answer

My new AOC 27"LED has a vertical white line moving back and forth on the screen. as it moves left, contrast is reduced and as it moves right, contrast is restored


The TCON board or the LCD panel is faulty. Can confirm by replacing the TCON board.

If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Jan 08, 2017 | AOC Televison & Video

1 Answer

I have a lg tv 60 inch tv ln5600 when powering on red stand by light blinks 3 time then no light pic or sound not backlight and no image when using flashlight treid replacing power board does same


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/

Jan 08, 2017 | LG Televison & Video

1 Answer

I have checked cables and different methods of connecting, but the white and red audio out of my PVR appear to have stopped putting out sound.


Go through the setup of the PVR and check the sound settings. It sounds like it's only producing digital audio, that's why it works with HDMI but you want analog, so set the audio to stereo, or try every setting to see what works!

Jan 19, 2015 | Televison & Video

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