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 Posted: Wed Apr 04, 2007 6:46 am Post subject: Toshiba TV 14R21 (PWB-1386 Board) keeps power on and off |
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| minnie wrote: | | Chech r216 10k ohm to see if it's burnt. If so you need to replace the resistor and flyback. Most common problem. Don't forget the obvious. Is the horizontal out put transistor good? Q501 pin 12 is your +5vdc, pin 40 is 9vdc, as pin 46. |
Hello Minnie!,
I have a 14R21 Toshiba old TV and still not consider it as a junk. The problem now was after few minutes viewing it suddenly turns off and on and you can hear a sound something a relay clicking. No abnormality observed from the CRT. About 5-10 minutes of turning on/off with the standby power monitor LED blinking red/green/off then goes powered on and again a few minutes again problem occurs. Pls. advise if what have to check on the circuit. Thanks! |
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GEOFFPAULINE
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| Posted: Fri Nov 09, 2007 8:42 am Post subject: SAMSUNG REAR PROJECTION SCREEN |
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| MY SAMSUNG REAR PROJECTION TV HAS JUST STARTED TO COUSE PROBLEMS THE COLOUR IS OVERLAPING EACH COLOUR MAKING FIGURES HAVE 4 EYES RAINBOW COLOUR AROUND THEM . I WAS TOLD THE COLOUR PROJECTION LENSES HAVE SLIPED IS THIS TRUE AND IS IT A BIG JOB THANKS GEOFF |
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gary
Joined: 05 Apr 2005
Posts: 584
Location: MANCHESTER, uk
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| Posted: Fri Nov 09, 2007 9:18 am Post subject: |
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| more likely to be the convergence ics, stk??? dont use cheap copies and check the picoo fuses. |
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jimmyjam
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| Posted: Thu Jan 22, 2009 4:40 am Post subject: toshiba tp55e50 |
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| My tv has the same problem. There is no sound (besides the initial click when plugged in and the power button is pushed) and no picture. Just a light on the front control panel flashing. If anyone can help with this problem, it would be greatly appreciated. Is the tv junk? thanks for your help. |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Sat Jan 24, 2009 12:14 am Post subject: |
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| Unplug the over protect connector and see if the set comes on. |
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TroyM
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| Posted: Sun Oct 18, 2009 8:34 pm Post subject: Same Thing With me |
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my 40 or 42 inch tube tv, has the same problem the light blicking in the frount pannle and not turning on. the light just keeps blinking. i thought maby it needed to cool down but no, i was lisenning to music on my xbox with it. and then suddenly it just shut off. i turned off for like 5 mins then turned the tv back on it showed a picture but then shut off in like 10 seconds if that. can any one help me  |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Oct 19, 2009 2:42 pm Post subject: |
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| And the model number is? |
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