20 Most Recent Samsung HCM4216W 42" Rear Projection Television - Page 4 Questions & Answers

the convergence ICs are most likely the cause of your problem. You can get replacement ICs at the following link with free instructions.
http://servicemanuals.vstore.ca/

Sorry to tell you gus, if you paid 500 bucks for convergence IC's you got #### and didnt get kissed. A repair like this should not go much over 250 to 300 bucks.

Dust accumulation in color wheel, light tunnel, chip area can cause green tint.

It is very delicate area, light tunnel and chip can be easily damaged. Remove light engine assembly and color wheel. Blow dust out. Re-assemble. If the gasket around the color wheel housing is not replaced in the right position, or the housing screws not tightened correctly dust will contaminate the color wheel/light tunnel area.

Call someone that has done it a few times. If near Calgary, call me.


easyab

Low ohm resistors are open or poor solder connections on the bottom of a convergence IC.

You need to look at resistors in good light with magnifying glass. Bad ones may show as discolored or burnt.

The repair needs someone that has the schematic for the convergence cct, and can replace the burnt resistors or replace the whole convergence board.

http://calgaryconvergencerepair.weebly.com/index.html

If you are near Calgary, call me, if not, find someone that has done it before, preferably many times.

easyab

sounds like a solder issue on the main deflection board. Check for signs of cracked or dull solder on that board. Its the large board on the right looking in from the back

No sound means it could be a ballast issue. If there is sound, it could just be the lamp.

You need to replace both convergence iCs STK392-010 you can get replacement ICs at the following link with free instalation instructions with pictures.
http://servicemanuals.vstore.ca/

the convergence problem you had before, re- occured

If it's a DLP, the red could be caused by a color wheel that's stopped working properly.

It could be the lamp, the ballast, or the color wheel. Last resort would be to check the power supply to the TV.

The tv has 2 focus adjustments for each tube, mechanical and electrical.

1. Mechanical focus is set by looking at screen from back (through inspection plate on back of most samsungs) and rotating the lens assembly on CRT. loosen wing nut and turn lens assembly to go through focus and back to best position.

Put convergence pattern on screen and manually misadjust bottom red and green lines convergence so they can be seen through inspection hole.

With back cover of TV off you can usually reach your hand up beside the lens assembly to loosen the wing nut then rotate to adjust. Green is in the middle. The focus will be obvious when you rotate and look

When you are finished make sure the foam dust protector is not over any of the lens assemblies and the wing nut is tight.

2. Electrical focus - located at front of unit. the front grille/speaker cover is removed and maybe a cover over the front crt inspection hole.

In the inspection hole there is a black plastic "Focus/screen adjust Assembly" with 2 rows of 3 controls.

One row is focus and the other is screen. The middle controls are for green with R/B on either side. Usually the controls are labelled as "focus" and "screen". You want to adjust the focus controls, one for each color. Look for the focus or screen label imprinted in the plastic. Don't play with the screen settings.

With the same misadjusted convergence pattern you can see a red, blue and green line. Adjust green focus and watch green line for best focus. Do same for other 2.

Screen adjustments are very exact and delicate. The easiest way to deal with them is to turn color off in Customer adjust menu. Put any color tone adjustments in the middle (low, med, high, put at med).

You should have a b/w picture if there are no crt or other color related faults. If it is close to B/W leave screens alone.

If the pix is too green, then the green screen setting must be reduced a small amount. Do not play with these adjustments as most TV repairrers have a difficult time adjusting them.

If focus adjustments don't help then focus control or CRT may be defective. Needs expert to determine.

easyab

http://calgaryconvergencerepair.weebly.com/convergence-ics.html

check the fuse inside...
and also the thermal relay..

that will turn off intermittenly

sounds like the red convergence Ic is weak ready to go out. try replacing the ICs around 10.00 do the blue as well as that will be next.

I would stay away if the problem is traced to the signal board you can end up spending more than 300 for a new signal board.

chances are its the red CRT PCB or the red drive circuit. Go to the following link and leave an email with your model number and indicate your problem they can get the parts you need and supply the tech support so you can install them yourself which will most likely be cheaper than a service call to diagnose the problem. Heres the link.
http://servicemanuals.vstore.ca/

The most common problem for those symptoms are convergence amps. That unit takes two stk392-040 Sanyo Ics and will most likely require that several low ohm resistors (3.9 ohm-2w) be tested and possibly replaced.. There is one last thing also, a pico fuse at Fd102 (3.5a) that sometimes opens and would need to be replaced..
The convergence board in these is easily removed, so an in-house service call could be done...
Hope this helps

Probably it is the poer unit

Check your speaker if still working, test it with a different audio source or an ohm-meter. Check the plugs & jacks from your audio connections, it may also be a cause of a lose connection from a wire near the plugs of the speaker locate it with a multi-meter or have it serviced with an authorized technician... ^_^

the vertical line has nothing to do with the picture tube,Some component in the horizontal circuit is causing that problem,most likely an electrolytic capacitor