Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

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Model # We need Model number confirmation on this one......then confirm IC part # and and advise concerning fuses and / or resistors............T.

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  • Vista Electronics Feb 23, 2008

    Bad solder connection on one leg of capacitor = examine

    with magnifier........T,

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  • Sony Master
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Im sorry ive been so busy with so many different tvs i have forgotten which set i was asking about? I have one RCA ptk178LA that has bowing at top& bowing upward on bottom it acts like bad cap because sometimes it will all of a sudden snap into full correct picture, then after awhile it will go back to bowing.

Posted on Feb 23, 2008

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2 Answers

I have a JVC AV-56Wp74 Blue power light on the front keeps blinking and the screen is black & makes a popping sound


There are a couple of common problems this model has--one is easy to confirm.


How handy are you if I tell you to disconnect the convergence board to see if it is your problem?

The blinking blue light means the set is in protective shutdown, and I know a fairly easy way to see if it is your problem and how to fix the set if it is.

Let me know if you need help--I am here to help people and l know a lot about this set.

SD TECHbd54bcc.jpg

Dec 16, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

I was told that my convergence ic's need to be replaced along with the 6.8 ohm watt resistors. What doI ask for the ic's and what watt resistors should I ask for. where can I buy these ic's and resistors.


I can help---what level of skill do you have at soldering?

I know these sets pretty well--to begin with confirm actual model number to me---The IC's and resistors can be bought.

The question is are you able to solder etc if I step you thru it?

Whatever chips the set uses you can buy a pair on Ebay for under 15 dollars--the resistors can be purchased at any electronics or TV repair place.

I help people here even AFTER they give me a vote here--idea is for you to get your set fixed and save money.

Tell me exact model and how much skill you have and I will assist you---I do this here for free.

Regards, SD TECH

Oct 28, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

How do i replace and align the IC of my panasonic projection tv.


if it is model number PT-47WX53 I HAVE START TO FINISH STEP BY STEP INSTRUCTIONS I CAN POST HERE---CONFIRM MODEL NUMBER AND BRAND-----I PRESUME YOU ARE TALKING ABOUT REPLACEMENT OF THE CONVERGENCE CHIPS?

SD TECH

Oct 15, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Televison showing Yellow and Blue shadows


Your symptom sounds like a damaged convergence IC.

There are two and large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.
There are also two resistors on the front of the board located in the middle that are fusible link resistors, these should be checked for opens and replaced if they are found so.

I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.


If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California; they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.
If you need any further assistance please respond to this post.
asnowman

Sep 22, 2009 | Panasonic PT-47WX49 47" Rear Projection...

3 Answers

My LG rear projection TV RE40NZ60RB colour is ghosting with three colours separating. Colour converging does not rectify


There is a problem with the convergence circuit. It can be as simple as poor solder connections at the pins of the convergence IC or a defective IC. If you can solder, you can fix this yourself. Please confirm the model number of hte set and I'll provide the part numbers etc. required to resolve this.

Thanks,
Dan

Aug 20, 2009 | Televison & Video

1 Answer

My Mitsubishi tv will not turn on.


If you have the owner's manual, you will find that the blinking light is an indicator that the lamp or fan is the problem. I'm not sure of your model number. Can you confirm that model please? If you no longer have the manual, once you confirm the model number, I can look up the code for you. Given its age, I would suspect that the lamp needs to be replaced.

Please post the model number and I will confirm.

Thanks,
Dan

Feb 20, 2009 | Mitsubishi WD-52725 52". Rear Projection...

1 Answer

Samsung pcl5414r power resistors and pico fuses??


Hi again and welcome back to FixYa,

Appreciate the direct "Ask Me'.

Based on your original post, only the STK ICs were replaced. Presumably 392-040, the surrounding resistors and pico fuses could very well have been affected as well. Depending on the board revision (pls confirm location numbering on the actual board), the resistors could be:
RZ104 -RZ106 - 270 Ohm 1/2watt
RZ133-RZ135 - 27K Ohm 1/16 watt
RZ136 & RZ138 - 3.3K Ohm 1/8 watt
RZ146 and RZ147 - 3.9 Ohm 2 watt
RZ148 and RZ149 - 150 Ohm 2 watt
while the pico fuses would look like the image below.
90b151e.jpg
Good luck and Thank you for using FixYa.

Dec 26, 2008 | Samsung PCL5415RB 54" Rear Projection...

1 Answer

Detailed problem per your response


The problem is that the ICs may have been blown because the resistors were bad. Just as a double check before you replace anything else. Please confirm that the STKs are STK392-110. Also, replaceing them with STK392-150 is a valid upgrade, I'm not sure about the 180s, but I'll check. Both the STKs and the resistors need to be changed at the same time.

The hour glass view you reported: Was the bowing on the top and bottom or on the sides?

Thanks,
Dan

Sep 11, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

I have a Samsung B/W Monitor, model Name SSC-12M for an observation System. Turns on for a few secomds, and then gets a straight line across and turns monitor on and off, Capasitor maybe? Worth repair ing...


The vertical Ic either has bad connections or is defective. Look for a small flat IC attached to a heat sink with about 11 pins. Try resoldering the pins first. If that fails to resolve it, replace the IC. This IC may be marked LA7837 or something similar. If you are unsure, post the marking here and I'll confirm you have the correct part.

Dan

Aug 28, 2008 | Samsung Televison & Video

1 Answer

Toshiba convergence


this sounds like me to be a output resistor..these are usally half watt resistors next to the convergence ics. the fact that you can move the convegence hairs side to side indicates that the ics are still good. i have tried to located the resistor on schematic... i know that they are the big one next to the stk ic these are the big ones on the big heat sinks. 1 watt i beieve. im going to keep looking

Mar 15, 2008 | Toshiba 42H81 42" Rear Projection...

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