Question about Sony FD Trinitron KV-28FQ75 28" TV

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Green corners of sony crt tv

Top corners are worse goes green and red depending on channel colour and now bottom corners showing signs of green too? thanks

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  • Master
  • 666 Answers

Thats kind of degaussing coil not function, try to replace that one and lest see what the re action of your tv. 

Posted on Apr 03, 2010

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Posted on Jan 02, 2017

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How do I fix a Sony TV that starts then screen goes blank


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Mar 24, 2015 | Sony Televison & Video

1 Answer

What are signs of picture tube going?


Signs of a CRT going old, are bad focussing, unnatural colours and hues of a certain colour (red, green, or blue) if you watch black/white pictures. In colour pictures, black sequences also show hue.

Jun 13, 2014 | Panasonic CT-32SL14 32" TV

1 Answer

I hv Sanyo PLC-SU07N Projector - the image is blue


I have a possible solution however it may not be THE solution your after, you'll probably be able to tell very quickly if it isn't, this will only apply if you are using either a component video signal or a PC/laptop signal to send to the projector.

If you are using a laptop or desktop to hook up your projector, I would try first of all double checking that it's correctly plugged in, and if you still have no luck try a different cable.
It's likely to be the cable because when the signal goes down the cable it's split into 5 different signals. 3 of these are the colour information for Red, Green and Blue. Depending on what you mean by 'image is blue', it could mean that your either not getting the information for Red, or your not getting the information for Red AND Green. If you want to test this, open up microsoft paint while connected to the projector and create 3 boxes, then fill 1 completely red, 1 completely green and one completely blue. If you are missing the information to any of these colours then that colour will appear black on the projector screen.

In component video the signal is split down 3 cables (rather than 5) and 2 are colours (rather than 3)... Red and Blue. Check that the cable running red (Usually labelled Pr on the DVD and projector) is completely plugged in (some of these are really tight, but it's important that it goes all the way) and also that you have plugged into the correct slot, for instance that you have plugged into Pr and not the right Audio channel, both of which are coloured red.

If you are still not having any luck then I would suggest using a computer monitor or a television (depending on what type of signal your sending it) to test the projector. Plug it in instead of the projector and if it works then the issue lies with the projector and I have at least narrowed it down for you.

Hope this has been helpful.

Mar 28, 2011 | Sanyo PLC SU07N LCD Projector

2 Answers

Which connectors are used for front panel, power on (red @white) and led ( blue @ white) please show a close-up view


Hi,
On the motherboard the pinouts on the front panel should be colour coded, and marked with letters like in this picture >>>>>
ce10baf.jpg

The connectors are also marked corresponding to where the connect on the motherboard, like in this picture >>>>>>
66ce2fc.jpg

If the board is not colour coded then the motherboard will marked with the same letters, you may need a strong light to see the marks.

Regards.

Feb 22, 2010 | Gateway GT5428 PC Desktop

1 Answer

Tv gone green/blue and sometimes red in top right corner


If you have a Sony rear projection LCD TV then you have a failing optics block. LCD TV's are not affected by external magnets like CRT TV's were. The optics block issue will only get worse and needs to be repaired by a technician.

Sep 10, 2009 | Sony Grand WEGA KDF-60XS955 60" Rear...

1 Answer

Green autoconvergence


The master convergence needs to be set in the service menu. You can't do this yourself.. you'll need a technician.

Mar 26, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Tv prob


Good Day, christenand;
It is a repair that will cost from $350.00 to $ 600.00 depending on service company. It's not real easy but not hard for a trained tech. I would suspect that the problem lies in the Convergence circuit. If you call for service make sure you use an Authorized Service Center. Good Luck, big IRISH.

Aug 23, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Trying to rewire cartridge


Red - Right Channel +
Green - Right Channel -
White - Left Channel +
Blue - Left Channel -

Regards
John w

Jan 30, 2008 | Audio Players & Recorders

1 Answer

Red colored halo at bottom corners of screen


Movement of any TV can result in a problem caused by bad
solder connections.In your case, the red convergence IC......
Found on a circuit board,mounted on large heatsinks........
Part # STK392-040.....Change both for prevent maintenance.
Do not use generics - I use OEM or better = Sam,Pan,Hitachi.
After repair,recheck alignment................T.

Nov 20, 2007 | Samsung PCJ533R 53" Rear Projection...

1 Answer

Green and red color problem on bottom left to a little past the middle of the bottom of screen


the convergence ic's are breaking down and require replacement should cost under $ 250 depending on your service shop.

Nov 18, 2007 | Panasonic PT-51HX41 51" Rear Projection...

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