Question about Projection Televisions

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Sanyo crt tv model cp21fs2 standby ok instant on then reverts to stand by

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  • jonvon Jul 19, 2008

    replaced all but chopper tx in power supply no difference

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2 Answers

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You need some experience for troublleshooting it.
Capacitors are probably the cause of most faults, even when you get a lineoutput transistor (LOPTR) gone , the probable cause was a capacitor.
They often fail with no external signs showing, but if the black plastic sleeving is shrinking away from the top, or the sides are wrinkled, then they are getting HOT, either by internal heat generation or by something nearby getting hot.
another sign is that the top silver surface is swelling , caused by gas generated inside, often due to over voltage (check ht level)

Posted on Jul 19, 2008

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Check the power board module for any damaged components

Posted on Jul 19, 2008

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No picture or sound, will not switch on/but red stand buy led blinks. Model LE19A13BTDG888


Stand by is on the power board but it is possible for standby to be up and running and main supply not working. Did you look for bad caps on power board or any voltages coming out of that board?

Dec 20, 2012 | Projection Televisions

1 Answer

I have sony lcd hd ready 50inch rear projector tv model number KDF-E50A12U tv comes on after couple minuets tv clicks off to stand by then red light in stand by flashs 3 times gos back to green repets


Hello
Three blinks of standby light to Sony TVs indicates that the regulated voltage output from power regulator board is above thatn normal. The problem is with its power supply regulator board. Replace all the electrolytic cpacitors on that board with new ones. Replace all of them including small and large ones, at one time. OK.

Feb 04, 2012 | Projection Televisions

1 Answer

Off switch on tv doesnt turn off, goes into stand by ??


most newer tvs never fully turn off. crt tvs didnt either but it felt more life it when the screen click off. the screen should turn off and the tv should be "off", if the screen is still on check the settings and make sure standby is not selected.

Mar 23, 2011 | LG Projection Televisions

1 Answer

Sony 51" projection tv standby light blinks 6


Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc

Dec 15, 2010 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Red light flash timer stand by


Please count standby light blinks and let me know.
There would be pause of 3 seconds in blinks.
Also confirm is it Sony KP-57HW40 model?

Feb 10, 2009 | Sony KP-57HW40 57" Rear Projection...

3 Answers

Timer Standby light flashing No pitcher


Sony
Model # KP-53HS10
Serial # 9718217
MFG 2000

Plugged in TV. Timer Standby Light just flashes continusly. No Picture and No Sound.

Apr 02, 2008 | Sony KP-51WS500 51" Rear Projection...

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