Lg 60PK550 Problem
Hello all,
My first post here. I value your time and expertice greatly, so I'll try to explain myself as thoroughly as possible.
The TV: LG 60PK550 (plasma)
The problem: The dang thing wont turn on properly!
The setup: I've got my system controlled by a logitech universal/multi device remote. For the last week or two, the rest of my system would come on properly, but not the plasma. I chalked it up to not having the remote properly aimed at the tv (it sends a bunch of different IR codes for all of my devices so it can be finicky at times) After manually switching the tv on and off a couple of times it would turn on fine. Once the TV was on, there were no problems.
Today, no such luck, so I looked at the symptoms more closely. Upon turning on the TV (when operating properly) the power supply makes two sets of clicks once (click-click) when the button is pressed. and again (click-pause-click) when the display fires up.
So, I press the power button and I get the first set of clicks. the LED indicator light behaves normally, and isn't flashing any error codes, but the second set of clicks never come and the display shows no signs of turning on.
After unplugging and replugging, I hear 3 clicks of the power supply arming itself and then after pressing power the same thing. One set of clicks and nothing from the display.
Having recently replaced the caps on an old Macintosh computer PSU with great success, I decided to take the shroud off of the back of the TV and inspect the power supply of the LG for bad caps. Nothing was visible on the top of the board, so I unplugged all the connections, unscrewed the board and looked on the back. No funny business there either.
It was at this point I figured I'd register on the forum and ask for some advice. In the hour it took for the registration to kick in, I decided to plug the power supply back in and try again to see if I could hear any odd buzzing or clicking from the power board. Here's where it gets funny. After I hooked it all back up and powered it on, it worked normally. So my logical next step was to turn it on and off several times to verify my own sanity. I successfully powered it on and off several times and proceeded to put the shroud back on. After the 5-10 minutes that elapsed as I put the screws back in, I tested it again. Now it's not working again.
That's the long and the short of it.
My questions are:
A) Does this sound like a problem with the main power board not relaying the power to the display? I figure if it is a problem with the caps, it's definitely an intermittent one, perhaps a capacitor is on its way out and is behaving erratically?
B) Since none of the caps on the psb show visible signs of malfunction, should I just replace them? Might this solve my problem?
C) Could any of the other boards be the culprit? I did a quick visual check of the other boards, but the main power board is the only one I scrutinized.
Phew, that was longwinded. Looking forward to your replies.
My first post here. I value your time and expertice greatly, so I'll try to explain myself as thoroughly as possible.
The TV: LG 60PK550 (plasma)
The problem: The dang thing wont turn on properly!
The setup: I've got my system controlled by a logitech universal/multi device remote. For the last week or two, the rest of my system would come on properly, but not the plasma. I chalked it up to not having the remote properly aimed at the tv (it sends a bunch of different IR codes for all of my devices so it can be finicky at times) After manually switching the tv on and off a couple of times it would turn on fine. Once the TV was on, there were no problems.
Today, no such luck, so I looked at the symptoms more closely. Upon turning on the TV (when operating properly) the power supply makes two sets of clicks once (click-click) when the button is pressed. and again (click-pause-click) when the display fires up.
So, I press the power button and I get the first set of clicks. the LED indicator light behaves normally, and isn't flashing any error codes, but the second set of clicks never come and the display shows no signs of turning on.
After unplugging and replugging, I hear 3 clicks of the power supply arming itself and then after pressing power the same thing. One set of clicks and nothing from the display.
Having recently replaced the caps on an old Macintosh computer PSU with great success, I decided to take the shroud off of the back of the TV and inspect the power supply of the LG for bad caps. Nothing was visible on the top of the board, so I unplugged all the connections, unscrewed the board and looked on the back. No funny business there either.
It was at this point I figured I'd register on the forum and ask for some advice. In the hour it took for the registration to kick in, I decided to plug the power supply back in and try again to see if I could hear any odd buzzing or clicking from the power board. Here's where it gets funny. After I hooked it all back up and powered it on, it worked normally. So my logical next step was to turn it on and off several times to verify my own sanity. I successfully powered it on and off several times and proceeded to put the shroud back on. After the 5-10 minutes that elapsed as I put the screws back in, I tested it again. Now it's not working again.
That's the long and the short of it.
My questions are:
A) Does this sound like a problem with the main power board not relaying the power to the display? I figure if it is a problem with the caps, it's definitely an intermittent one, perhaps a capacitor is on its way out and is behaving erratically?
B) Since none of the caps on the psb show visible signs of malfunction, should I just replace them? Might this solve my problem?
C) Could any of the other boards be the culprit? I did a quick visual check of the other boards, but the main power board is the only one I scrutinized.
Phew, that was longwinded. Looking forward to your replies.
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