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Projection T... Master
Re: Toshiba 50H71 projection tv
The convergence ICs have shorted and thats whats shutting down the set. Its an easy repair you have to replace both the Convergence ICs they are STK392-110 ICs you can get replacements at the following link and they provide free instalation instructions with pictures and also free tech support. Heres the link. http://servicemanuals.vstore.ca/
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Are the red and green lights blinking at the same rate or not? If the green light is blinking every 3 seconds and the red light is blinking every 1/2 second, the lamp door is not properly secured. If both lights are blinking at 1 second intervals, try replacing the lamp. If a new lamp doesn't solve the problem, the TV needs service.
I have a toshiba 50hm67 tv and with mine the blue light would come on and I would hear sound first and then the picture would finally come on... this happend for about a month.... next the yellow and blue light would come on but the pic still wouldn't come on until it clicked off and on by itself for about 10 min this went on for about a week. All of a sudden last night the red lights by the power light started blinking. No tv now and when the tv shut off it said lamp not working.
If it shuts off and then the power light starts blinking red or it never comes on but the power light just blinks red continuously that is usually indicative of the convergence ICs (STK 392-110). You never want to replace the ICs without also replacing the resistors that are associated with them. There are usually 6 resistors, one for each of the colors and there corresponding direction, IE Red horizontal, red vertical, blue horizontal, ect. In the case of this model tv all of the resistors are 2.2 Ohm and 2watts. You will find them right where the STK 392-110 ICs are. Right in front of them. They are blue and have this color code on them. Red, red, gold, gold. These are represented by stripes on the resistors. You can get the parts from www.bdent.com They carry the ICs and the resistors. If you do not feel comfortable completing this repair I could do it for you if you send me the board. My email address is: firstname.lastname@example.org The cost is 375.00 and that includes parts. Good Luck.
You need to replace both of the convergence ICs they are number STK392-110 you can get new replacement ICs at the following link and they provide free instalation instructions so you can do the repair yourself which tkes about 30 minutes to do and saves you about 400 dollars. heres the link. http://servicemanuals.vstore.ca/