Question about Sony KP-46WT510 46" Rear Projection HDTV

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KP46WT520 TURNS ON BUT ONLY SHOWS RETRACE LINES

ONLY LAST 30 SECS.

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The question is very vague, and there are many things in the TV set that can cause this. In most cases the power supply is going in to protect mode because some components in one of the areas is going too far out of specs and causing some kind of failure. The power supply is shutting down to protect the set set as best possible.

It will take an experienced tech with the proper facilities to diagnose the fault, and determine the failed components that are at fault. In many cases with these sets, they will have to change a complete circuit board to service it.

Jerry G.

Posted on Apr 29, 2008

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HD52W140 White screen with retrace lines then shuts down


This has the ATC311 chassis. I have found that capacitor C14703 has actually been loose on the deflection board and that had caused the set to have a white screen with retrace lines then the set would shutdown. I resolderd this and normal operation was resumed.

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Sony WEGA - model # KP-46WT520 no picture. TV turns off


http://www.scribd.com/doc/6241839/SONY-KP46WT520
http://www.retrevo.com/support/Sony-KP-46WT520-TVs-manual/id/268bh741/t/2/

Ok, please find above, a user manual above that, is a service manual, this will help you troubleshoot and repair this unit, if you so wish. So, it is nearly always my professional opinion that one should always get a "Quote" from the manufacturers recommended service center, Sony, in your case, please contact a local or head office and ask for a referral to an Authorised service center. I cannot stress how important that last point is. It is even worth the cost of shipping. You see an authorised service agent, will have trained staff, trained on their brand, also they have first hand access to parts, original parts. This will actually save you money and ensure you can actually get it back fixed. Of course asking for a "Quote" also gives on the option of repair or replace. Often my clients,do not go through with repair, unless it is moderate, but in some of the more costly jobs they see it, as do I, that a replacement, with a warranty, is a better option. As an aside here, one could then tear the TV down, and sell the Known Good bits. You'd be surprised who needs parts, i myself often must by from third party sources to effect a repair. So money could be recouped, somewhat,and help out someone else.

May 12, 2010 | Sony KP-46WT520 46" Rear Projection...

1 Answer

Tv turns off and on by itself. when turned off, it shows bands/lines of color. what could be the problem?


high voltage regulation problem. when high voltage gets too high protection circit kicks in and shuts off tv. since high voltage is too high, you will see a glow with horizontal retrace lines. if you see red, green, and blue lines your convergence ic's are overheating. suggest local service center

Nov 10, 2009 | Projection Televisions

1 Answer

Too much yellow does not adjust with normal drop screen adjustments. can i adjust the light beams.on my philips 50"


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;} 1. Turn the green screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
2. Turn the red screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
3. Turn the blue screen control on the Focus Block until retrace lines appear and gradually turn it back
until the point where you can see the retrace line disappears, just before cutoff.
4. If the screen still appears too bright after proper G-2 adjustment, you need to adjust the sub-bright adjustment in the service menu
control down until screen cut-off. (Service data Range is usually 21 to 25 in the Service menu, for Sony sets you first go to category "MCP2", & then adjustment item 01( "SBRT")= subright.
For electrical the focus, put on the screen a clear picture of your choice thru an input of the TV set from a DVD, then pause the playback of the DVD Look into each color and rock that color focus control back and forth (turn the control one way then the other way slowing down as the picture goes into the best focus. till the picture looks sharp do each color till they all look in focus. NOTE: it is best to look into each color tube to achieve the best electrical focus. For optical focus please follow the manual lens adjustment in the sets service manual
By Larry Dillon

Aug 27, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

Turns off after 30 seconds


i think the convergence amps are weak, or the akb circut has caused the tubes to go bad, google your model number to see if it is in the tube problem. sony made some projos w/ bad tubes in them. tv lasts only three or four years,no cause i had one

Jul 10, 2009 | Sony KP-65WS500 65" Rear Projection...

1 Answer

Rear Projection Sony KP-57WS600


sounds like the blue crt is shorted and thats causing the red voltage to increase causing retrace lines then shutting your set down. You can get new CRTs at the following link with free shipping but they are pricey.
http://servicemanuals.vstore.ca/

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2 Answers

Have power but no sound or picture


Do you have high voltage? Check by turning up one of the screen controls to see if you have retrace lines.(pinstripe diagonal lines across the screen) If present turn the screen control back down until the lines just disappear. Check diodes 6003, 6012, 6025, and resistor 3669. If you don`t get a retrace line by turning up the one of the screen controls, check for missing voltages or shorted components in the horizontal output and power supply circuits. Note: Philips TV`s can be tricky even for experienced technicians. Good luck

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1 Answer

Retrace lines and poor convergence


you have bad solder connections on the convergance board solder then and get back to me k

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