Re: Sony KDL46EX520 3/4 of screen distorted
here are the pics...
erskine
Member
Last Activity: 10-10-2020, 04:59 PM
Joined: 01-12-2014
Location: bridgetown
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Re: Sony KDL46EX520 3/4 of screen distorted
ok thanks MalachiLeave a comment:
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Re: Sony KDL46EX520 3/4 of screen distorted
here trying to remember how to post pics of this tvLeave a comment:
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Sony KDL46EX520 3/4 of screen distorted
Hi . Have this sony kdl46ex520 that had no power ,
I replaced 2 FETs in the power supply. They were shorted .
now that i got it to power up i am seeing another issue.
the tv comes on with a perfect picture for about 30 seconds to a min.
then 3/4 of the screen goes distorted .
is this the panel? -
Re: Toshiba 40rv525U no audio
hope i got it right sending the pics...Leave a comment:
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Re: Toshiba 40rv525U no audio
took some pics but dont no yet how to post themLeave a comment:
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Toshiba 40rv525U no audio
Hi , i have this Toshiba 40RV525U with no audio.
It was making a loud noise from the speakers when first turned on.
I re soldered some cold joints on the power board and the noise stop .
now its totally muted except for the little blup u hear when it powers up.
The speakers are good and i am usind an antena as my input with a good picture ,
thanks in advance for any help. -
Re: My first 144 pin IC replacement with ChipQuik, success I hope
good job . I usually use a hot air gun to remove and replace sm ics . works fine , i just use the soldering iron on any pins that were not properly connected .Leave a comment:
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Re: AKAI model# LCT42Z5TAP screen going R G B and white
well i cant even find the info to fatory reset the thing .
seem unusual , but i downloaded the service manual . so will try
fixing it without replacing any boards.Leave a comment:
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Re: AKAI model# LCT42Z5TAP screen going R G B and white
will try to find out how to factory reset itLeave a comment:
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AKAI model# LCT42Z5TAP screen going R G B and white
hi all ,
I am repairing this akai lcd that came in with no power .
I replaced some 220mf caps on the main board and got it
to power up.
Now its just comes on with a red screen and it goes blue then green and then .
white . and repeats that cycle over and over.
anyone knows what causes this problem?
thanks -
Re: panasonic power supply problem
checked the 5volt supply and its stable for a while , then it slowly drops , and then the relay starts to click on and offLeave a comment:
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Re: panasonic power supply problem
Sorry for not getting back here . The 5volt supply is stable once the tv is on buy fluctuates once the relay starts clicking . will get back to it tomorrow and see what i findLeave a comment:
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panasonic power supply problem
good morning ,
I am working on a panasonic LCD model #TC-32LX85X.
The problem is , when i first plug it in and turn it on it worked for hours.
Then it shud down and the relay is constantly switching on and off, have to leave it unplug for a while for it to come on again , but same thing happens after a minutes .
The power supply number is TNPA4484 (3) (p).
took out the power board and have it connected to a main board and it still does the same thing.
was able to bridge the relay , and the 12v , 24v and 2 other voltages working fine, .
problem... -
Re: RCA TUNER/AMP M#3798, no display
that is oh so right . got it fixed finally .
first thing it was the zener after all .
i did replace it and then put back in the old one.
problem was the AC was passing through 2 47mf caps that
were bad , i replaced the caps , lift the zener and the 24 v came back up.
so i just replaced the diode and the display is shining as bright as day .
thanks BudmLeave a comment:
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Re: RCA TUNER/AMP M#3798, no display
i did replace the zener , so still have to try replacing the rectifier diode to see what happens . and for sure the voltage stays the same with no load on it .Leave a comment:
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Re: RCA TUNER/AMP M#3798, no display
yeah the voltage comes from the main transformer , and I am getting 15v ac . and a rectified voltage of -3 volts .
the rectified voltage comes from a simple circuit of one diode ,a resistor , a 24v zenner and a filter cap .
strange thing though , i didn't replace the rectifier diode or check the output with the scope , will do this .Leave a comment:
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RCA TUNER/AMP M#3798, no display
hi friends. I am working on this RCA tuner/amp model#RV3798.
The problem it has is that the Vacuum Fluorescent display is very dim.
I found that there is a missing -24v , traced it all the way back to the transformer , replaced all active components and filter cap , but still the same . .is it possible there can be a problem with that particular winding on the transformer?
thanks in advance .
ERSKINE -
Re: LG50PG20D Plasma which not showing picture but has sound!
hi Wezzo, had a similar set with the same problem , it wasthe ysus boardLeave a comment:
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Re: Panasonic TH-50PX80U Plasma - Powers on, no picture (Lightning?)
hi I'm new here. are you getting any error codes from the led. if so how many blinks ?Leave a comment:
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