Question about Samsung HCM4215W 42" Rear Projection Television

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No Picture, Not Convergence Board Problem

HCM4215W When turned on the red light next to "Timer" flashes ~10 times as normal. However, the screen remains black. Audio still works. I have tried disconnecting the convergence board as suggested by many threads on this site. This does not solve the problem. When the TV is powered on, the bulbs turn a dim orange in color, but no picture or light is projected to the screen. I have checked the fuse next to where the power cord plugs in. This fuse is ok. I have looked for other fuses to check but have not found any others. I have tried fiddling around by disconnecting each bulb board to see if one of these boards were overbearing the power supply but no luck. Same symptoms every time. At this point I'm thinking it's a power supply issue? Is there anything else I can do to pinpoint the problem?

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Re: No Picture, Not Convergence Board Problem

PVAT! Give a real close look at the signal pcb for evidence of coolant leak.That will pull down power circuits, giving all kinds of strange symptoms.

Posted on Oct 08, 2007

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Picture seems to be offline( curved down) also everything seems doubled and you can see the red, yellow and blue colors of the lenses on the screen

Tv have a problems known as a convergence problems it is dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the board that call the convergence board it is dead.This convergence board require service must be replacing parts 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board,to solved the tv picture convergence problems mis alignment.The tvs shops,will cost u like around $300-350 for parts and labors.

May 28, 2011 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Samsung 42" rear projection HD tv issue

pico fuses are those small on board fuses, usually soldered into place, that protect important parts of the board.

Feb 26, 2008 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Tv Problem

Sony TVs generate an error code. The front panel LED (red) will flash anywhere from one to eight times which can isolate the problem circuit. It is not always accurate.

If you have a test meter which can read DC voltages and resistance in ohms, you can locate the problem area. If you lack the expertice to do so, contact a sony authorized servicer. If you have the ability, start by checking fuses on the "G" board ( power supply board) and the "D" board or deflection board.

A major problem area in this TV is the convergence circuit. There are six fuses around the convergence output ICs on the "D" board.

If any are open, replaces the output ICs.

Feb 13, 2009 | Sony KP-61HS10 61" Rear Projection...

1 Answer

No picture on samsung hlp5063wx/xaa

to test this set
unpug the 4 pin conector labeld + and _ 20v on the cg convergence module
if set turns on, the problem is that modual
replace bolth convergence IC'c stk392-040
also check all 3.9 ohm resistors and both pico fuses.

Jan 16, 2009 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Red Convergence out on right side of the screen only

Projection TV sets have several common problems listed below.

Problem #1) Convergence


  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
Problem #2 CRT Fluid has clouded over.


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:

You can see more examples and find a fix here...


Dec 08, 2008 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Black screen and red timer light is on

It may be the problem of the Dish connection or stablizer. Remove the stablizer and connect the Tv direct to switch board and re connect the dish connection. Then switch on the TV it will work.

Nov 04, 2008 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Tv wouldn't turn on, unplugged convergence board, turned on, replaced STKs, still have convergence problem

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Feb 07, 2008 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Tv wont turn on

Further, I've replaced the convergence board, but that didn't fix it either.

Nov 05, 2007 | Samsung HCM4215W 42" Rear Projection...

3 Answers

Tv won't turn on

Your problem could be the Convergence board is loading down the power supplies and will not let the TV set come on, or the power/deflection board, part number AA94-08574A, or the STR type regulator IC, part number AA13-00105A. If you locate the convergence board, unplug the connectors, and see if the set will come on. if the set does come on, replace both of the STK convergence IC's at once. The part numbers for those IC's are STK392-40. You can get the original replacement IC's from MCM electronics for about 15 to 16 bucks a piece. Do not use the less expensive STK IC's as they are not the same. the replacement IC's should have the name of SANYO printed right on the face of the IC's. Good Luck

Jul 22, 2007 | Samsung HCM4215W 42" Rear Projection...

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