Question about Samsung HCL4715W 47" Rear Projection Television
Replace both convergence IC's part# STK392-040. Also check for burnt/discolored resistors nearby.
Posted on Aug 24, 2007
If the convergence IC's heatsink is cold to the touch,you need to check the two 5A micro fuses which supply the +30 and -30 volts to the convergence IC's (they are soldered in small fuses hard to find but look for them right under the heatsinks of the STK's) When the IC's shorted out they opened the fuses protecting the resistors.
×
May 17, 2015 | Breville Juice Fountain Elite Juicer
Sep 22, 2007 | Mitsubishi WS-55511 55" Rear Projection...
Aug 23, 2007 | Samsung HCL4715W 47" Rear Projection...
Oct 16, 2014 | Computers & Internet
Oct 31, 2010 | Toshiba 43HX71 43" Rear Projection...
Dec 15, 2008 | 1996 Audi A4
Oct 02, 2008 | Jobri Health & Beauty
Mar 06, 2008 | Mitsubishi VS-45607 45" Rear Projection...
Feb 26, 2008 | Televison & Video
Oct 27, 2007 | Hitachi 43FWX20B 43" Rear Projection...
688 people viewed this question
Usually answered in minutes!
Replace both IC's STK392-040 made absolutely no difference to convergence problem ie the blue is offset to the right (unable to adjust) and the green curved towrads the center of the screen (pin cushion). SOmething else the STKs like that drives it?
Resistances on board associated with the STKs looks OK and checked OK by comparison in-circuit ohms check. Resistances were checked while the STKs were off the circuit board.
I believe I have a convergence problem too. No pictures occur. shadowy lines (red, green and blue) bow towards the center of the screen.
Please HELP.
Samsung HCL4715W 47 in. Rear Projection Television.
I have the same convergence problem where the red seems ok and the blue and green bow down towards the center. Will replacing the entire board solve the problem?
×