Question about Proscan 40LD45Q Full HD 40 LCD TV
I found there was a very significantly sized burn spot on the inverter panel and replaced it with no success after investigateing the tcon i found a small chip in one of the resistors (perhaps it was a copassitor?) power supply seems to be fine and there are a few hazy spots on the main board, by that i mean im not sure if they are burnt curcuits/solders one thing im almost certain is the c10 and c15 have a number of sockets in wich only one is very discollored and to me appears they are burnt how exactly can i tell if this really is the case? also how can i eliminate wich parts i will not need i already put in a brand new backlight inverter and dont wanna continue wasting money on the tv. buying a new one is not an option right now and the tv is only two years old, how can i tell if i will not need a new power supply or if i will not need a tcon or if i will not need a new cord or even main board? please help i am desperate.
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Posted on Jan 02, 2017
SOURCE: no power
Probable IHVT aka flyback xformer.Also,check Horiz output transistor.Please provide service number (three characters longer than model number) & chassis # then I can give you part numbers.T.
Probable IHVT aka flyback xformer.Also,check Horiz output
transistor.Please provide service number (three characters longer
than model number) & chassis # then I can give you part numbers.T.
Posted on Oct 12, 2007
SOURCE: 52" ProScan TV
You would have to do that through the service menu. However I would not recommend doing that without the service manual. I can post a link to the service manual if you would like.
Posted on Feb 24, 2008
SOURCE: Proscan PS60690
First of all I take it that your TV is a PS60690 model. Unplug the TV and let it sit for a few days because there is approximately 3,300 volts at the splitter. You’ll have to remove the front lower panel. It is held in by clips around the top. I removed it by hand. Once you get your fingers to pull it away a bit the clips should release and then you can just lift the piece up and out of your way. Next you will have to remove the convergence panel in the center. Remove the bolts that hold it in and un clip the four wire connectors (2 on each side) and set the panel to the side. The splitter is now visible by looking into the hole and up to the left. It is held in by 2 bolts one in the front of the splitter and one in the back of it. Don’t remove it until you have all of the wires removed. Remember to be very careful here because of the potential voltages. The voltage should bleed themselves off over time but might not! I used my electrical meter to test for voltage before I touched any bare wire. What I did was remove the wire with the red grommet that holds it up into the splitter. There are 3 green grommets and a black grommet. They might be hard to see the colors because of the dust …. Just wipe them off. The red one is the one on the far left of the wires that are 4 in a row. I used a screwdriver from the front and lightly pushed the retaining clip towards the back of the TV while gently pulling the wire downwards. Watch out for the little bushing that is around the wire. Try not to lose them because you will need them to put the splitter back together. Now I took the red lead from my tester and touched it to the exposed wire end that I just removed and touched the black lead to the metal part of the TV chassis where the splitter is actually mounted. Once you’ve established that there is no voltage present, label all of the rest of the wires so that they will be put back in the right places when you are ready. Test each wire the same way before touching them. Remember to be careful and capture all of the little bushings You will need the splitter before you do this so you will have to buy it. The RCA part number is 205064. I have to run right now but I will send you any info that you might need ……. Just ask …… I don’t mind helping out if I can. There is more.
Posted on Oct 06, 2008
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