I have a HCM4215W samsung 42" rear proj. TV . i replaced the red SUBpcb and the STK convergence board with NEW parts from partsstore on Ebay. the TV turned on for about 2 mins as i tried to set perfect focus, it stalled at 4% so i turned off the TV and turned it back on to align it manually. after going through about 3 menus and barely being able to se what i was doing , the red started to like spiral arond where it was misaligned and then i turned off the set out of fear ,LOL. i tried to turn it back on but it dosent "click" and give the tones the light (timer) just blinks however i can hear a very VERY highpitched noise thats almost inaudible, kind of like when a TV is on and you know it cause you can "hear" the set whining (Sorta). i was hoping that the red PCB and the actual convergence board would have fixed my issue, now im still prepared to move forward with this repair. i have seen posts on "pico" fuses can anyone elaborate pls? also IF the power supply is shot (im guessing) then is that part replaceable by itself or is that mean i meed the whole main board? Thanks in advance... Josh borges
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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.
Go to this website they will List Parts and Part Number for this Model Your STK ICS need to be replaced or convergence board that has ICs on it!. ICs will have Part # on them STK392-020 Encompass Parts Distrubtion
For ICs Call Mats Electronics 1-800-628-1118 If you are able to repair/replace just ICs replace 2 resistors also 3.9 ohms or 2.7ohms in front of ICs
Are you saying that after installing a new convergence board, you still have the same issue? If that's the case, another new board isn't going to resolve this. Also, you can't do a factory reset. Doing that would lose all the convergence and geometry data in the TV and would require a qualified technician hours of work to restore the settings. If you've installed a new board and have the same problem, suspect a problem in the TV's power supply. All convergence circuits require 2 voltages to operate. There will be a postive and a negative voltage of the same value. If you're missing either of these voltages, your convergence will never work properly.
It seems your TV Samsung HCM4215W has problem in convergence board and need to be replaced. You can get that board from Parts Store on $76 If you have bit electronics knowledge and know how about tv repair, you can replace it by yourself or get help of local tv tech person.
It probably is see if you can align the convergence manually or auto if available, you can order just the convergence ic's or the convergence amp board, whichever you prefer. check pricing and availability. also check Blue crt for faded picture, usually dirty crt fluid, makes picture dark and discoloured. If it is you may need to replace the blue crt also. this gets a little expensive, again check pricing hope this gets you started RFT