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Pioneer SD-P55A5 Shuts off and must be reset with Main Power Switch
We got a Pioneer SD-P55A5 TV for free because you can be watching it when it totally shuts off. You don't have to pull the power plug but you do have to cycle the main power switch, and then it works immediately. It may run for minutes, or hours.
I pulled the back cover and when it shuts off a red light on the power supply board illuminates. It is labeled S145, if I am reading it correctly. When you cycle main power it goes out, and when it is operating correctly, it remains out. I figured it is a warning light, but I don't know what it is telling me.
Any help is greatly appreciated.
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If the Projection Monitor does not operate properly, reset it as
follows:
1. Turn off the power of the unit with the MAIN POWER switch.
2. After approximately 1 minute, turn on the power with MAIN POWER switch and POWER button.
This is a problem related to the hue controlls in the TV. It is quite common.
Fix: You can go into the TV settings and try adjusting the hue/tint there.
If adjusting settings does not work, request help from a technician to fix it for you since it will take adjusting the hue internally and if you do not do it correctly it can damage your television.
A lot of these sets had convergence problems--usually if that is the case the set will not come back on.
They also had solder problems on mostly the main power board--if that is where that transformer is I would suggest you mark and unplug all the plugs and remove that board-- If you look closely you may find you have a cracked connection or connections around it---
A good idea is if you do this and find a bad connection take some time and look that whole board carefully--with it out I would go over it and solder any questionable connections---A lot of these sets use lead free solder and it does not stick real good--bad connections develop after time from expansion and contraction as the board gets hot and then cools off.
Let me know what you find--I am here to help people.
If this helps you, rate this solution as I do this here for free.
Its is a cold solder joint on the board. The board is the one located at the bottom right of the tv when looking at the rear. Mine did the same thing. After refreshing mose of the large solder pints on the board, it stopped. Hope this helps!
it is the power supply board an know problem with pioneer. If you have any soldering experience you can remove the powersupply board and resolder the tracks and as many parts as you can. I had the same problem and not the power supply works great. You will soon have other problems like pic and sound going intermittant where you have to hit the tv to get it back on. more solder problems on video main board. best of luck
Probably started as a bad solder connection but if it's blowing fuse FU106 now, you're probably in for a new set as that usually means your convergence IC's are bad along with a pair of darlington transistors that's mounted to the heatsink nearby. With the age of the set it may not be worth the trouble. If no fuses are blowing, you could still have a bad solder connection near the Switched Mode Power supply transformer. If that isn't it, you could have a bad High Voltage Block and you may end up having to replace the deflection board as well thank you Pioneer.
if that is a short for sure it will shut off permanently. probably a loose connection(cold solder). have it inspect physically and resolder if possible. good luck!
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