Re: Plasma Tv 42" Hot point No picture no sound
Please any one can respond?...
ryann2k1
Member
Last Activity: 08-02-2015, 04:35 AM
Joined: 04-16-2015
Location: Sydney
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Re: Plasma Tv 42" Hot point No picture no sound
is there any way to get an example of circuit diagram for the "similar" power supply board and Y sustain board?Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
Thank you for responding. Vs and Va are in normal range. I am still wondering, if vscan is not close loop...the measured voltage is supposed to be the same, when unplugging the Y sustain and when plugged. When i plug, Vscan around less than -50v but when i unplugged, Vscan = 0v....Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
anyone can help?Leave a comment:
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Re: Samsung LCD TV LN40B530P7N Distorted Color Picture
I have a similar problem.. with samsung LCD TV LA40B650. I tried above to got to the service menu but it doesn't....Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
the voltage for Vscan is measured from -50 (supposed to be lower than -100v) than gradually decreased to 0 v( y sus is unplugged). My other question is that does the Vscan voltage only appears once in closed loop, unlike Ve, Va, and others?...Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
the voltage for Vscan is 0-no voltage ( y sus is unplugged). My question is that does the Vscan voltage only appears once in closed loop, unlike Ve, Va, and others?Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
Thanks I will do that this weekend....Leave a comment:
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Re: Plasma Tv 42" Hot point No picture no sound
I have done that, I unplug y-sus and measured, vsc measured at 0v (no voltage), Va,Ve and others are in normal range. I forgot to mention that I have replaced one capacitor at power supply unit, 47uF/50v. I thought that was the problem as the capacitor looks already bulging, but I was wrong, the problem still remains..Leave a comment:
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Plasma Tv 42" Hot point No picture no sound
I have a 42" plasma tv brand Hotpoint (it seems the boards are samsung made). When plugging the power source, tv turns on with green light turns on, but no picture and sound. A few second later, it indicator turns to red(stand by mode). After turning on with remote, tv indicator turn to green but still no picture and sound at all. There is one green light on the logic board (i think) which keeps blinking (see attachment). I have tried to unplug the X-board and Y-board( one at a time and all simultaneously) but the problem remains. I have measured Va, Ve, Vset, Vs, all are in normal rating... -
Re: New Members - please post your introductions here
Hi. I am a new member here. Hope can get some help and shareLeave a comment:
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