Question about Samsung HCL4715W 47" Rear Projection Television

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Samsung HCL4715W I attached a crosshatch pattern generator to TV. The convergence is not to bad in the middle of screen but toward the bottom the red line looks like 60Hz signal is affecting the signal. It just goes crazy.

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It is very possible that there are some parts in the power supply that are failing. This can be from voltage regulation, filtering, or noise problems.

Jerry G.

Posted on Jul 09, 2008

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Dptv335 model number#60pp9363H/17SAM Mode Green Convergence


Your Green CRT is getting Mold in the glycol. This will get worse. You need to drain the glycol out of the crt and clean, then apply new glycol to the crt. You should do the blue one also, because it will go next. The Red can can be left alone.

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Seeing double characters lots of red orange and green red and green lines


The convergence is out. Re-align the convergence as required to centre the beams. The convergence yoke is a series of magnetic rings on the tube neck, and this yoke becomes loose over time, re-adjust it and if it has a locking clamp, which has unscrewed slightly, secure it. Otherwise use a little blob of nail polish on the rings between the tags to 'lock' the yoke in aligned position, and stop it from shifting; do NOT use superglue on this part.

The best way to re-adjust convergence on a set like this is to obtain a signal generator or generate some kind of crosshatch pattern (black background) - this way you can see the errors in the white lines clearly. You can try doing it with a normal picture, but a test card/crosshatch pattern is best for true convergence alignment. Place a mirror in front of the TV so you can sit behind it to see the adjustment.

Be careful when rotating these magnetic rings, as they also form part of your purity balance. Rotation of such rings, must be done SLOWLY and gradually until the lines appear white at a viewing distance of about 3 feet from screen or whichever satisfies you best; and you can switch back to normal pictures while doing this to see if it improves.

Don't panic if you cannot obtain a generator; these are expensive, so the cheapest option is to download or draw some test pattern pictures and make a disc of these. If you are careful, you can make adjustments like convergence with the set turned on but try not to touch the deflection yoke while active - it may bite you.

Good luck - remember, convergence is a simple task to correct in sets like this, because there are no complex components involved like ICs.

Feb 16, 2011 | Hitachi Televison & Video

1 Answer

Seeing doubles


there is an adjustment called convergence.the convergence setup generates a crosshatch.you need to adjust the red deflection.this is a common thing when the t.v gets moved.the crosshatch or convergence button is mostly on the front control panel.consult the manual for where it is.

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1 Answer

Samsung HCL4715W 47 in. Rear projectio


IF YOU HAVE DOUBLE IMAGES YOU CAN GO IN THE MENU AND TRY TO ADJUST THE CONVERGENCE, OR US THE AUTO JUST. ON SOME SETS IT IS ON THE FRONT. IF IT DOESN'T CORRECT THE PROBLEM THEN IT IS CONVERGENCE. I REPAIR 2-3 A WEEK. WE DO IT IN THE HOUSE, NO NEED TO TAKE THE SET OUT. MAKE SURE THEY REPLACE BOTH CHIP'S AND THAT THEY USE ORIGINAL PARTS, THE GENERICS DON'T HOLD UP. THEY USUALLY LAST 3-5 YEARS DEPENDING ON THE USAGE OF THE SET.
DON..

Jan 27, 2008 | Samsung HCL4715W 47" Rear Projection...

2 Answers

HCL4715W Rear projection "Red" color is dim


screen adjustment,remove front bottom cove and find the focus block the screens are also on the same block,if your not sure don't try.

Aug 28, 2007 | Samsung HCL4715W 47" Rear Projection...

2 Answers

Convergence problem or??


Yes it has power supply and convergence problem let me know if you need help with part # s or how to fix it

Jun 23, 2007 | Samsung PCN5425R 54" Rear Projection...

1 Answer

Red convergence problem


Yes I think the IC's on the convergence board are bad. This board is no longer available from Samsung but is available for repair or a swap from http://www.ptscorp.com. Find the telephone number and call them. or you could replace the two ic's on the board. Good Luck

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2 Answers

Convergence


Im trying to install that same board on the same tv how did you do it?

Apr 06, 2007 | Samsung HCL4715W 47" Rear Projection...

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