20 Most Recent Samsung HCN653W 65" Rear Projection Television - Page 3 Questions & Answers

Ur tv have a convergence problems,it dead.U know how to solders?U have a soldering iron,solders,solder Wicks?Tries Websites Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost $300-350 for parts and labors.

my tv also had wavy lines when running thru the cable jack or your standard RCA jacks. i used a S Video cable to hook up my cable and dvd player... with no lines. they are about ten bucks at walmart one of the componets on the signal board.. my dvi also works without any lines. just for the record ihave been fixing tv's in my garage now for about a year all these experts say they cant fix that with this model tv i'll try picking up a parts tv and changing what i think has gone bad inside this tv and let everyone know.. but i have told you a way to get around it and get back to watcing your tv without any of those annoying lines

projection TV`s have many protective circuits in them, they protect your CRT`s from damage, over voltage called x-ray, and many others, you need to have it checked before the damage is more costly your TV is not happy and needs to be checked

Replace Both of your STK ICs Big black ics will have part number on them example STK392-110 also there is 2 resistors 2.7 ohms near STK replace them Call Mats for Parts 1-800-628-1118

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.
    

Hi my name is Eric,
I hope I can help you with your issue ,
Sounds like a bad convergence board
probably this one here　make sure before you buy
checking this is the correct one for your model, samsung has a few version of this set

　
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Eric I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

Well, first of all, isn't there a warranty on the repair?
It still could be a bad solder connection somewhere but I have seen what is called a G2 / Focus block go bad causing your symptoms.

Working around those tubes is not recommended unless you know what you're doing. You can really mess up the picture or worse, break a tube.

Chances are that the convergence amps are bad.
If those are mounted on a separate board, replacing the board would be the easiest thing to do. Running the magic focus or touching up the convergence in the customer menu may be required.

Convergence amp IC failure. Replace the two ICs and check the 3.9 ohm feed resistors

Replace both of your STKs convergence ICs also there will be 2 resistors that maybe opened 2.7ohms. KIDs running vacum would have no affect what so ever on TV.

you can just change the chips and the resistors also check the board it may have small green fuses on it

STK's are the convergence IC's. There are two which are usually located over large heat sinks towards the left of the TV (depending upon the model). But before you attempt to change them, try the following first:

1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and re-plug to AC power and redo the cabling. Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.

5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic of a bust capacitor (not same model):

Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows this kinda stuff to do it for you, or get a qualified technician.
Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.

REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

I just had this problem fixed. In my case, it was because the insulation on the CRTs was cracked, and when it would warm up, the shielding would separate and would let 5000 volts arc across the main board. This, obviously, damaged the board. The tech didn't catch the arcing right away, so they replaced the main board twice before they used a high-temp RTV to patch the insulation.

The power-cycling was a result of the damaged board.

The point of this story is that the broken part may be a symptom of the real problem.

I hope this helps someone!

Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



Solution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

The consensus here is a medium to pale/light blue - black or dark blue would blend better, but it would be one darn dark bathroom. You want something that blends, not accentuates the purple.

Hope this helps :)

Thats why the service menu is for the SERVICEPERSON! It tells you in the manual to always write down the values. Even if you get someone with another set, that could mess up your set even more as there is no "default" settings to these alignments. Even with the same exact set, same exact model, the settings could be way off for one but not for the other. I am sorry to say, if you cannot straighten this out, you have no choice but to call a pro to help you out. Good Luck

Hi.

Either the stk convergence modules or the vertical ic have failed.
replace the 3 parts and it should fire up again.

I had a repairman replace the convergence boards. The picture is fine now however red & green colors are messed up.

This is a very old post Do you do need Help?