Question about Toshiba 42H82 42" Rear Projection HDTV-Ready Television

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Solder to use on ICs

Is regular electrical solder ok to use when replacing ICs?

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  • Toshiba Master
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No its best to use radio shack solder # 64-006 for electronic circuits.

Posted on Oct 26, 2008

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My RCA 52 is blurry


Hi


Thanks for using FixYa. From what you have described it seems that you have to replace the convergence IC and also check the power resistor, if values are not exact you have to replace them. These ICs are located behind the black heat sink; you can see once you open the back off the TV. Also, the convergence board should be checked for cracked solder joints and please make sure to check the resistors as if they are shot the ICs might blow again. All this is only recommended if you have electrical expertise and know how to solder/re-solder components, if not then you should get this done by a professional. The typical cost to get this fixed by a pro is around $250-$300. Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Apr 03, 2010 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

I have a KP-57WS500 57 in. Rear Projection


No,U have solderwicks?U can buy it,in any Radio Shack store.Use solder iron on top of the solderwicks to soap up the solders out ICS pins.Replaced the ICS use any kind solders just resoders ICS back to the heatsink.Tries Websites Tv repair World.com,Tv repairkits.com to buy a complete convergence kit.

Mar 06, 2010 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Sound ok but no picture


You have bad grounds on the solder side of the main board and maybe the crt board. If you can have someone pull the board out..do so carefully. Wait a few days to let the power drain from your tv before examining it. Look extremely close to any and all ICs with a heatsink attached. To the untrained eye it may look OK...but take a real effort and a magnifying glass and inspect closely. Look for cracked rings around the pins of these ICs. Resolder these and do not run solder between the pins. Use solder wick to correct this. Good Luck....you best effort may reward you...just remeber to be careful!

Feb 06, 2010 | Toshiba 27A33 27" TV

1 Answer

Panasonic (PT-56HX41PF) rear-projection tv with no picture


The three blinks indicates a convergence IC fault. The convergence ICs must be replaced with the manufacturer replacement part. Use only the original replacement part. Your set uses STK392-110 convergence ICs.
These ICs are mounted on a large heat sink. Yes, you can replace it yourself and save few hundred bucks. But you must be knowledgeable enough on how to solder, resolder and use a multimeter.
You will need:
  1. Convergence ICs
  2. Heat sink grease or thermal compound
  3. Soldering iron
  4. Solder lead.
  5. Digital multimeter
  6. Solder pump
  7. Small side cutter
Feel free to inform me if you decide to replace the ICs yourself

Dec 03, 2009 | Panasonic PT-56HX41 56" Rear Projection...

1 Answer

How to replace convergence ICs in samsung


You will need:
  1. Convergence ICs.
  2. Heat sink grease or thermal compound.
  3. Soldering iron.
  4. Solder lead.
  5. Digital multimeter.
  6. Solder pump.
  7. Small side cutter.
Steps:
  1. Unplug the unit from the AC outlet.
  2. Remove the screws and take the back panel off the TV. The convergence ICs are located behind a large heat sink.
  3. Remove the board that the ICs are on.
  4. Check all the big resistors on the board using the digital multimeter. Some resistors are connected in parallel so they read half of their nominal resistance.
  5. Check the board for cracked solders and tracks.
  6. Cut all the legs of the ICs and unscrew them from the heat sink to take them out.
  7. Remove all the legs by applying soldering iron on one side and pulling on the other side.
  8. Clean the holes for the new ICs with the soldering iron and solder pump.
  9. Clean the heat sink from the old thermal compound or grease and apply the new one to the ICs.
  10. Fit the new ICs legs on the holes and screw them to the heat sink. Wipe excessive grease. Make sure they are making good contact with the heat sink.
  11. Cut excessive length of legs. Leave about 2mm and solder it in.
  12. Clean solder points with lacquer thinner or even alcohol.
  13. Make sure no solder is going to two legs at the same time.
  14. Put all back together.
  15. You may need to readjust the convergence on the menu.

Oct 24, 2009 | Samsung HCN653W 65" Rear Projection...

1 Answer

Bad color blue green bad pic tried adj covergence no luck


The problem is either poor solder connections on the convergence ICs ore defective ICs. If you can solder, you can fix this yourself. Be aware however, of dangerous high voltages that are present even with the set unplugged. The ICs are STK392-120s and should be attached to a large heatsink. Try resoldering the pins first. If that fails to resolve the problem, replace the ICs.

Dan

Dec 29, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

Solder used on ICs


If it is designed for electronics, yes.

Dan

Oct 25, 2008 | Toshiba 42H82 42" Rear Projection...

1 Answer

Color


Did you replace both ICs? If so check the solder connections if they are ok you may have the resistor that controls the blue vertical yoke open. Check the resistors for one being open if the solder looks good on the pins of the new ICs

Jun 02, 2008 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

Panasonic pt-53tw53 convergence


It looks more like an open solder because you were able to align it properly after replacing the STK ICs, if there was an open resistor(s) you would not be able to get it align.
I would suggest to go back and double check the solder joints on the STK ICs as well add some fresh solder to the resistors nearby the stk392-180.
Good Luck.

Apr 28, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

PT51HX40B


I would suggest to check the solder joints again and also nearby the STKs area, check the low values resistors solder joints as well.
It looks like the ICs are overheating.
Did you apply enough thermal compound before installing the ICs?
Try placing a fan close enough to the ICs, just to see if overheating is an issue.
Good Luck.

Mar 03, 2008 | Panasonic PT-51HX40 51" Rear Projection...

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