37" Polaroid tv-Press the power button and the led turns blue, but nothing happens. I figured out that if i unplug the set then plug it back in it worked. We did that for about 1 week. Then tonight nothing, no matter how long I left it unplugged, it will not turn on.

power supply board is damaged,only working with standby power

The power supply board was having problems before.That the board,where the power a/c cord plug into it Now might also the Tuner board are dead too.The tv Tuner board,that the board where the tv broscast signal cable plug into it.That the Tuner board.Tries Websites like shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement to see if solved the problem,not probally will have to buy the refurbish Tuner board for the replacement too.

your right there will be a bad caop in the power supply the can will have a domed or puffed top the value is printed on the side replace it and it will all set to go

The following steps should be able to correct the problem:
1) Unplug the TV or remove AC power from the TV
2) Count to ten and then plug in the TV
3) Locate the [Menu], [VOL-] and [Power] button on the TV’s side panel
4) Using the buttons on the TV’s Side Panel, press and hold both the [Menu] and [VOL-] buttons.
5) While holding those buttons, press and release the [Power] button one time and count to 3 before releasing the [Menu] and [VOL-] buttons.
6) The TV’s lower left Blue Power LED will come ON.
7) Wait 30 seconds. Confirm that the blue LED on the Lower Left of the TV (not the iPod dock for iPod models) has remained ON during this time.
8) Press the [Mute] button on the TV remote twice
9) Unplug the TV or remove AC power
10) Count to ten and plug the TV in
11) The TV power should automatically come ON and the blue power LED with be ON
12) Wait 40 seconds and the TV picture should appear
13) You can now continue using your TV.
14) If the picture does not appear, power on the TV manually:
· If the LED begins flashing, unplug and power ON a second time.
· If the LED begins flashing again, power ON the TV without unplugging
If the LED begins flashing again, contact us directly by phone to obtain a local authorized service center for you.
If the TV does power on, please reply back with the software version number for us to research this issue. Please follow these steps to obtain the software version number:

1) Press the [Menu] button on the remote control.
2) Using the arrow keys in the center of the remote, scroll over to the "settings" menu and select the [OK] button on the remote
3) Scroll down to "system info" and select [OK] button on the remote

When the filter capacitors went out , the power supply will feed AC instead of DC into the circuit board and may have damaged other circuits. Do you get the 5vdc standby voltage? it should be on one of the power supply out put connector the minute the you plug in the TV, you must have this before go further.

It can be the main board or the power supply, look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find

Look on the power supply for a plug that has an id of voltages, you'll see one that says PO, that means power on, to kick the power supply up. Put you DVM on that pin and press the power button and watch the meter, you should have high activity, if it comes up to lets say 3.4 volts and falls off then the main board needs replaced. Let me know how you do!

There is an awesome post about capacitors going bad in polaroid TV's... it is here on fixya.

http://www.fixya.com/support/r741402-polaroid_flm_373b_lcd_tv_black_screen
and another thread here
http://www.fixya.com/support/t995507-37_polaroid_flm_373b

I just took apart mine, and though the capacitors are not "bulged" as they apparently should be, I'm willing to spend the 45 bucks on parts (2 capacitors, soldering gun, solder, and de-soldering tool) on Amazon.

It should take 1-2 weeks for the parts to reach me and I'll post back with the results. It's better than dealing with the $300 solution proposed by polaroid...

The problem:Press the power button and the led turns blue, but nothing happens. I figured out that if i unplug the set then plug it back in it worked. We did that for about 2 weeks. Then one day nothing, no matter how long I left it unplugged.

My tv is 18mos. old out of warranty and Polaroid refuses to do anything about. I am extremely upset because I know that this is a manufacturing defect.
This may or may not work for other Polaroid models I have no idea. Here is a picture of my info.
 
Anyway here is how i fixed my set.
Total parts cost $5.12 

This has worked for me, I am no technician so I can't say that it will work for you. Click here for information on caps. Or here
If you try this it is at your own risk! 
Defective Parts:2 CapXon 1000uf 10v caps.
Replaced Parts:2 Off brand 1000uf 16v caps. (the closest match my local supplier had.)
Once unplugged and flipped over I removed these three screws to access the control box.


 
Carefully pry up and pull back on the vented cover.  
With the cover off I removed 3 more screws and again carefully pryed up on the control box cover to expose the inside.
 Circled is the location of the bad caps. (This is an after picture. I didn't take any pictures of the caps still on the board.)
Press your index finger over the tops of the 2 caps and feel for a bulge. Good caps should be sunken in. Bad caps ballooned.
 These are mine removed
 In order to de-solder your caps you must unplug all connectors and remove the 4 screws holding down the board. Be very careful!, and only touch the sides of the board. Wear an anti-static band also.

 Once removed pull of the plastic shield underneath the board. Be careful and save it, YOU MUST PUT IT BACK.
Carefully de-solder the old caps. Replace with new caps. 
Note the polarity This is very important! On the board look for the + sign. That is your positive. The longer lead should go here. Take your time and verify This step.
CLICK HERE FOR CAPACITOR POLARITY

(sorry no pics on the cap removal and install I wasn't positive that this would work so I didn't think about taking any.)

Reverse the procedure to put your set back together.
Now plug it up and hope it works for another year! 
Curse Polaroid and vow to never buy anything from them again!
 It works again

My FLM-3732 did the same thing yesterday. But I had a had time getting it to come on and it finally did.But when viewing with the analog tuner I could see some hum in the picture.The digital ones looked normal.

Today when I turned it on the LED went blue but then dimmed and slightly flashed/flickered.

On the power supply board there were 2 very small 1000 microFarad 10V capacitors that looked odd.The tops were slightly pushed up.
I pulled them off and they both read too low.Only about 200 microFards.
Replaced them both with a couple of 1000 microFarad 16V capacitors from the junk drawer.

Now it works normal again.