Toshiba Cinema Series projection TV 1998 purchased. The TV powers off on its own now; could be after watching for just a few minutes or a couple of hours or more. Red power light flashing once a second. Unplug and plug might work; sometimes have to do several time and may stay on or power off again with same indication. When unplug and plug mostly if it does not come back on and will produce a loud pop and then same thing; flashing red light.

SOURCE: Automatically powers off, flashing red LED

try removing one neck board at a time and see if it stays on and longer,don;t let the board touch any metal or a short wil follow and you got problems.try the red first,

SOURCE: TV turns off and power light blinks unpluged andd still does it.

Likely to be the STK convergence chips causing a protection circuit to switch the TV off. Have you got any onscreen convergence problems (i.e, colour fringes)?

SOURCE: toshiba TP43H95 projection tv has power but no picture

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: [email protected] The cost is 375.00 and that includes parts.
Good Luck.

SOURCE: I turn the power buttin on....after about five

When was the projection lamp last change?If the tv,projection lamp inside the tv at last change was 1/ 1/2 or 2 years ago,and the tv is on,an in use at lest 4 or 5 hours day.The projection lamp life,it over should be change the projection lamp.Now tv turn on LED light "LAMP" indication light up or flashes?Yes,the projection is dead,hear alot of clicking too?The Ballast board it also dead,should be change too.The Ballast board,this board job,it help to ignite the projection lamp.

SOURCE: My Toshiba tp50h95 50" rear projection television

Hi,
This kind of symptoms indicated of convergence circuitry failure. The affected parts is the 2 convergence IC's (STK-392-110) and some of the fusible resistors (low resistance resistors). If you are going to DIY, you must have a multimeter to test the resistors' resistance. After you've pinpoint the faulty resistors, replaced them together with the IC's.
Prepare necessary tools like soldering iron, desoldering pump, philips screw driver.
Let me know if your handy with electronics and I will guide you fixing it yourself.

If you don't have necessary tools and test instrument and can't troubleshoot the unit yourself, I would advice you to look for a professional to isolate the problem.

Also, check if your unit is still under warranty/extended warranty period, avail it because the manufacturer will fix it for free. Opening the back cover will void the warranty.

Hope I helped you.

Have a nice day!

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