I have a Samsung 42 inch rear projection (hcn4226w) that had its convergence go out. I bought a new sub-deflection board and installed it but when i plug in the blue colored cable and turn on the tv, the powersupply makes a hissing sound and the red light on the tv blinks and turns off. Any ideas

Ken Sheftel

• 13 Answers
• Posted on Aug 23, 2007

SOURCE: TV picture not straight

There are no manual adjustments inside. this problem happens to many sets of all different manufacturers and models of c.r.t proj. type tv's. What has happened to your tv is most likely that one of the ic's (large black modular looking things about 2" by 1" by 3/8" fastened to a large aluminum slab of metal called a heat sink) on one of the large circuit boards has SHORTED OUT. The number on these ic's is stk392-***. If the asterisks shown are 110 then there is an upgrade of 180. If say the last 3 numbers are 040 then there is no upgrade. Anyway both Ic's need to be replaced and any associated resistors in the circuit area that have burned open or got hot and changed value also must be replaced..in addition a calibration of the convergence may need to be done either according to your operators manual or factory service manual by using your remote control and/or buttons on the front panel of the tv. Sometimes a samsung will have a small circuit board separate from all neighboring circuit boards that only has the convergence circuit on it. In that case the complete board should be replaced if possible. Do not attempt to do this repair yourself unless you are expert in electronics or guided by one. Above all do not attempt to make any repairs without being sure that the set is NOT plugged in.

SOURCE: Samsung HCN4226W Green Tint Around Corners

sounds like the alignment of the convergence in that area needs to be preformed or you have a speaker or something in that corner

SOURCE: Samsung HCN4226W 42 in. Rear Projection

My 5 year old Samsung HCN4226W is not coming on (no picture and no sound). When pressing the "ON" button, I can hear a "click" like it wants to come on, but nothing happens. HEL

SOURCE: samsung rear projicton tv 42 inch aa68-50523a

youll need to have the tv converged...the red being out of line says that

SOURCE: my tv sumsung hcn4226w 42 inch rear projection will not turn on

either the lamp is burned out or the ballast and power supply board need to be replaced. can call 1-800-samsung for nearest service center.