Question about Philips 42PF7320A 42 in. Plasma HDTV

4 Answers

How do I locate these boards?

You gave an interesting answer to that other fellow and I think it might help me also. I have the same set and had the ssb board replaced 4 months ago. Now it started having all these wild colored lines shooting through the picture. So how do I locate these boards if I need to replace them? Do you have any numbers for them? The service manual that I have only deals w/ numbers not many names.
You can reach me at abarbeau1@comcast.net
Thanks in advance!
sounds like the Y boards.best to replace all 3 at same time main and buffer upper and lower

Posted by on

  • airbird Aug 25, 2008

    I'm left wondering why one person says it's the Y-Buffer and the other says its the convergence board stk-320. How do I know which one is right?

  • airbird Aug 26, 2008

    Very excellent details about everything, Kudos

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Hello,

REsoldered all the parts in the circuit board. specially on the ssb board. its only loss connection.

melnavz

Posted on Aug 26, 2008

  • Emelio Navaja
    Emelio Navaja Aug 26, 2008

    Besure to test the parts that is suspected before you replaced.

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Yes it is good advice to replace all the three at the same time.just give your perfect part number and you can get this at any following sites. http://fixmymonitor.com/

Posted on Aug 25, 2008

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Its the convergence board its locate on the main mother board and u need to replace the stk-320

plz rate this post

Posted on Aug 25, 2008

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  • Philips Master
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Enter your model number here to find parts, if you decide to DIY also buy the service manual

Posted on Aug 25, 2008

  • Ginko
    Ginko Aug 25, 2008

    Regarding Ysus etc. you can buy the complete Ysus Zsus board kit, and replace them, you usually start from replacing the Ysus board , then replace the rest of them.
    Cheapest place where to buy Sus boards is on ebay.
    Here you can buy the complete kit, contact them with tv model number to ensure you are buying right kit.


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1 Answer

Toshiba tv turns off on own after 2 - 20mins


It sounds like a common problem of a main power supply that is failing. This is often caused by a cheap (too cheap) capacitor that is falling below a useful value after warming slightly.If no longer under warranty, you may be able to verify this by removing the rear panel, locating an area on the main board or a smaller board with larger-than-average parts on it.Once located, you can use 'freeze spray' (Radio Shack or similar source) to carefully and targeted cool individual parts to see if the set will come back to life.The parts of most interest will be cylindrical in shape, may be either 90 degrees to the board or (if smaller) may be parallel to the circuit board and will carry markings of 'VDC' and 'uFd.'You can accelerate the turn-on and shutdown cycle by using a hair dryer to reheat the suspected area.If you can locate one part that is allowing you to cycle the on-off of the set and want to do the repair yourself, comment back to this message and I'll give you further guidance.

Oct 11, 2011 | Toshiba Regza 32LV67U 32 in. LCD HDTV

1 Answer

What are the part numbers for the two main boards for the TV? Looking from the back of the unit , I am interested in the board on the right. I think that may be the power board. We had a power surge and I...


Exact make and model will help.
See www.shopjimmy.com to see if he has the boards for your TV.

Constant blinking means that the power supply main fuse is still good and the 5vdc standby power supply section is still working. It may be detcting short circuits so it stays in safety shutdown mode.
It can be the rest of the power supply is bad, main board, backlghts inverter, etc.
You need more in-depth troubleshooting.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

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1 Answer

Tv will not turn on


I have not repaired this particular brand. My first concern would say the power supply board is at fault.This the first thing a TV tech will inspect when a TV is dead. This board is usually the smaller of the two boards located inside the TV. If this will help, the signal board is the on with all the RCA jacks and RF connections, the other board of course is the one you will be interested in! Thanks for asking and show a few hands of support!

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1 Answer

Power on no picture only sound


Here is a solution for the problem. My tv did the same thing. You have 2 blown capacitors that are located at EC17 & EC18 on the top circuit board inside the set. On the back of your set is a black cover with 3 screws. One is in the middle and there are 2 small ones on each side. Remove the screws and the cover will come off. You will now see a metal cover and I think it has 4 screws. Remove them and remove the cover. You should now be able to see the inside of the set. There are 2 circuit boards. The top board has 6 screws I think and and 3 connections that need to be unhooked so that you can remove the board. You can order the capacitors at Digi-Key.com and the part number is 493-2069-ND. Look these up on the website and it will give you a picture of what you are looking for. I sent my board and the capacitors to a guy in Poland Maine at JD Electronics and he soldier them back in for me. I did not know how to do this. I put the board back in my set and it works fine now. Give him a call and see if he can help you. His name is John
(207)998-5687. I hope this helps.........Good Luck....Morton

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1 Answer

My TV have a black zone from the top to down an about 8" wide on the middle of the screen..... waht is this and how can I fix that..... thanks


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1 Answer

A little interface issue with an asker


I understand what he's saying about the site not being very intuitive. Issues like that are hard for us to perceive because as we gain familiarity with the site, we lose our fresh eyes.

We actually discourage Experts from posting a short, incomplete solution and then using the comment function to flesh out their answer. We call it placeholding (although I realize that that may not have been your intent). The only way you would have known that we discourage that practice would be if you'd received one of the warnings we send out about it. You also could have seen it if you were one of the very few people who read my blog entry http://blog.fixya.com/2008/09/theres-a-new-sheriff-in-town/. Basically, we need to make that information much more visible on the site. Our head of customer support is coming to California at the end of the month. She and I will be working on making a user-friendly set of guidelines that we will post somewhere easily accessible on the site.

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2 Answers

TV WONT WORK


I was lucky to get a tv repair shop that was a Sanyo authorized dealer to talk to me about this issue.
They told me that they had 3 of these tv's in and they said they were all repaired by replacing "3" parts. they are:

the Y SUSTAIN Board - Part # LJ92-01200a
the Y-Upper Buffer Board Part # LJ92-01202a
and
the Y- Lower Buffer Board Part # LJ92-01203a

I am in the same boat. I amd going to rip the back of my tv off and verify the part numbers. I HAVE NOT REPAIRED MINE YET.. so take this for what it is worth. The Repair shop gave me this info because they were going out of business and did not intend to take any new tv's in for service. The girl who gave me this info read it out of the service repair tickets from 3 Sanyo DP42746 tv's that had the same symptoms as my tv.

Please post back if any one has taken action.

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1 Answer

Olevia 237-s12


It sounds like a bad power supply board. I have one in stock if you need one from a working set that has a broken screen. I'll send all boards for 100 dollars plus freight if you are interested. All boards include Power supply coard, tuner and internal lighting boards. Call me if your interested.
Ed
NC Electronics
307-266-4675

Jun 02, 2008 | Olevia LT37HV 37 in. HD-Ready LCD...

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