Question about Televison & Video
Hi i think i know whet the problem is just need a solution to it..
worked fine yesterday turned on today and flickered making noise came on but was flashing bright and dim then came on fine for around 10 sec then went off and started flashing fast..
think its the ballest on the tnpa2307 circuit board however i am not sure..
had psu replaced last year but now this aswell are there common issues with this particular model of projector..
can i get the ballest unit on its own or do i need the full circuit board if these options are available please can you advise on where to get them and aprox cost..
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Posted on Jan 02, 2017
SOURCE: Repairing Circuit Board
Q553 is a mosfet transistor NTE2973 ,caps1200pf 2k volts c552 is probly good, you might also have to replace STK-392-110s if so you will have to do complete convergence alinement. you need someone who knows how to solder,and do set up alinement for this does have to be done by someone who knows how if not done correctly you can shut set down,then you will really have trouble!!!!!!
Posted on Dec 23, 2007
SOURCE: TV grinding noise
A grinding noise in that model usaully means the light engine is defective or it could be the color wheel. But light engine is most suspect as there have been some issues with the light engine assemblies
Posted on May 11, 2008
my tv had the same problem and the B+140 was low. When I measured it, it was 89volts unfortunatly led me to the Flyback tra$former. after alot of troubleshooting work, I realized that the primary is short circuited. Also the horizontal output xsitor heats up alot on start up, thankfully it doesn't blow :)
I've had panasonic flybacks do this before to me. I havn't replaced my Flayback yet but when I pony up the $65.00 I expect (and pray) the TV to work fine. There is an off chance that something like the splitter or the foucus block caused this failure, but I doubt it.
Posted on Oct 05, 2009
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