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ok i have a tv 42 inch and the problem is have double image like red and the green and blue is ok but the red is bad and when i make the focus ajust nothing happening normally the blue and green do the ajust but the red one to do but stop so i open back to my tv and i put a piece a paper on the red lent but the imagen is like just blue and green so do u think the red lent is not good. sorry for my english and tank u for all your help

Submitted: 133 days and 23 hours ago via RiddledTV.
Category: TV
Value: $9
Status: AWAITING CUSTOMER ACTION
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Posted by Eric 133 days and 9 hours ago.

Info Request

Hello my name is Eric,

Welcome to Just Answer

 

Please post a model number and tell me

What number best describes you?

1. I just want to know what to expect a repairman to charge me,

2.I want to try pushing buttons and checking connections

3. I will open the TV if needed, but have limited tools and skills

4. I have technical skills and have a soldering iron and or voltmeter

 

If I have helped you with your issue please click accept.

If you have more questions you can still respond until this post expires,

I will reply asap

Thanks

Eric

133 days and 6 hours ago.

Reply

Hi eric i have a SONY MODEL KP-43T75, the problem and my tv is i have a double image. the red color is make a double image but the image is like curve, i ready made the flash focus but the red color stop to do the flash and never go to the aliaments. I just want to now if i can fix that problem myself. Thank u for all your help

Posted by Eric 133 days and 5 hours ago.

Answer

If the colors are wavy and will not move using the remote convergence menu your ICs are most likely bad, plus possibly a few resistors.

You can only adjust the red and blue in the customer menu, the all 3 colors can be adjusted in the service menu. If the ICs are bad (probably are) after you solder new ones in you may not need to do any adjustments , so leave the adjustments alone if . If you would prefer a repairman fix the set the ICs can be replaced for between $300 and $400

here is the DIY (do it yourself) info

this model PTV has two convergence ICs on a large heatsink (metal thing with fins on it) . taking it apart will require 1/4" and other driver bits and involves unplugging delicate cables and other cables that should be marked if unplugged.

I will not go into detail about how to take the board out, but know this there are a few philips screws holding it down after removing the back. The ICs are screwed to the large heatsink and when replacing make sure there is some heatsink compound on the metal to metal surfaces. also look carefully at the resistors near the ICs and check the pico fuses that supply the two voltages -35 and +35, usually I find one burnt pico fuse 5amp or 3.15amp . The two ICs are part # STK392-560 or stk392-110 available online for around $15 each here

Make sure which one your TV uses by checking whats written on them

 

Install the ICs and if the blue is still off check the supplying pico fuse for the blue. (I just check the pico fuse on the power supply the two convergence ones are side by side each other)

Hope this helps, if it has solved your issue please click accept and close out the request

But if you have more questions please respond and I will reply asap

Thanks

Eric

133 days and 4 hours ago.

Reply

the color they r not wavy the red color make a like double image but his image is like curve so when i put a piece of paper on the red tube the double red image desaperete but i have perfect picture image but only in green and blue colors

Posted by Eric 133 days and 3 hours ago.

Answer

You will need to replace at least the red convergence IC, I always replace both together.

probably have a blown 3.15 amp fuse too

133 days and 3 hours ago.

Reply

graphic
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133 days and 3 hours ago.

Reply

i send to u a picture how luck the image so probably this help u a little more

133 days and 3 hours ago.

Reply

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133 days and 3 hours ago.

Reply

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Posted by Eric 133 days and 3 hours ago.

Answer

Thank you,

You still need convergence ICs replaced .

see the red is doubled , that is what is going on.

Did you want more info on fixing this?

They are soldered in

133 days and 2 hours ago.

Reply

So in where place on the tv are instaled, and where i can buy it. and i realy apreeciate all your help

133 days and 2 hours ago.

Reply

So do u think i can do it myselft

Posted by Eric 133 days and 2 hours ago.

Answer

I don't know, some distroy the Tv trying.

without experience soldering you may ruin the TV.

I'd say just pay a tech $300 and don't risk it

its up to you

Eric

133 days and 2 hours ago.

Reply

i have some skill soldering that is not problem but my cuestion now is where i can find thoses IC circuits in the tv in where pleace.

133 days and 1 hours ago.

Reply

can you now help telling me in where pleace in the tv i can find those circuits please

Posted by Eric 133 days ago.

Answer

The ICs are screwed to the largemetal heatsink with fins on it.

To buy new ICs click here

they look like

 

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Location on the board is IC1502

 

 

 

 

Eric

133 days ago.

Reply

ok i ready found it so i will try to change boht right. well thank u very much for all your help and will fix my t v again thank u

Posted by Eric 132 days and 23 hours ago.

Answer

Yes change both IC1502 and IC1506

Check both fuses F651 and F652

Please Click Accept for my expert solution!

Best of Luck!

Thanks

Eric

132 days and 23 hours ago.

Reply

ok my tv have two IC STK392-150 one 0905 and other one 096 and u told me IC1502 and IC1506 they r a diferents number

Posted by Eric 132 days and 22 hours ago.

Answer

IC1502 and IC1506 are the schematic location #s

These #s may be written on the circuit board.

I don't think there are more than two of these large ICs in your TV.

So it seems you have found them.

I do not mind helping you, but noticed you have not clicked accept yet,

Please click accept and I will continue to answer questions

 

I can provide limited help you do it yourselfers,

I can not train you on:

Safety when working around electronic current

Disassembling and handling of delicate circuit boards

Soldering or replacing components

There are many videos on these topics on the internet,

please do your own search on ehow.com or youtube.com

You may make the TV unrepairable if you crack a board or short out something

Do it yourself at your own risk, I have actually given my advice that you should not attempt this self repair.

I will help until we reach the limit of the help I can provide.

Thanks

Eric

 

 

129 days and 4 hours ago.

Reply

hi eric i just let u know about my tv problem i ready change both ICs and i stay havieng the same problem, u told me check also the fuse and resistors but i dont know where and wich one they are. Im agree to make other pay but if is possible u send me a picture o tell me where are thoses fuses. thank u and will wait for u answer

129 days and 3 hours ago.

Reply

how the fuse they look becouse i found the numbers F651 y F652 but they r dont look a regular fuse that i know, sorry but i dont have nothing experience fixing tv and also if u tell me where i can find it

Posted by Eric 129 days and 2 hours ago.

Answer

If you don't know about Tvs and have not soldered ICs before you should probably call a repairman.

Many have messed up their TVs to be unrepairable.

If you are saying you already replaced the ICs, just replace both fuses

 

The fuses are on the power board, (The G board I think) they can not be measured in circuit even if you had a voltmeter. The voltage needs to be checked.on both sides

 

129 days and 2 hours ago.

Reply

oh ok but the fuses where i can get it radio shak or in ebay o if u can send me some web site again thank for all your help

Posted by Eric 129 days and 1 hours ago.

Answer

To buy some click here about $5 for a 5 pack of 5A (5amp) pico fuses

Radio Shack may have them also

Thanks

Eric

 

Eric40126.0998511227

129 days ago.

Reply

i take a picture those are the fuse number F651 and F652 and the board. Question both fuse have 5 amp or have diferents thank again

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Answer

Both are 5 amps, if you have a voltmeter measure them after desoldering one end.

Or just install new ones.

Hey wheres my accept?

I've given alot here!

Thanks

Eric

Picture
Expert: Eric
Pos. Feedback: 98.9 %
Accepts: 913
Answered: 11/9/2009

Technician

TV Repairman for over 30 years, still working in the field

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