19 polaroid tla-01911c

[squigs]

Re: 19 polaroid tla-01911c

I have the 19"polaroid TLA-01911C and here is the problem. The TV will turn on the POLAROID logo appears as always then the picture and sound come on but the picture vanishes after 2 seconds or less. Sometimes there is no picture after the logo. The sound and controls still work but I have no display of anything. I currently have the TV apart and circuit boards out. I see no obvious problems. I was wondering if the caps in C132 & C133 locations on the board in front of a transformer are the ones I read about some Google searches are causing my problems. I am going to try and check 2 out tomorrow. Any help would be appreciated. I can not access this forum from work so I can only check back when I get home. Thanks again

[PlainBill]

Re: 19 polaroid tla-01911c

I have the 19"polaroid TLA-01911C and here is the problem. The TV will turn on the POLAROID logo appears as always then the picture and sound come on but the picture vanishes after 2 seconds or less. Sometimes there is no picture after the logo. The sound and controls still work but I have no display of anything. I currently have the TV apart and circuit boards out. I see no obvious problems. I was wondering if the caps in C132 & C133 locations on the board in front of a transformer are the ones I read about some Google searches are causing my problems. I am going to try and check 2 out tomorrow. Any help would be appreciated. I can not access this forum from work so I can only check back when I get home. Thanks again

A classic description of the 2 seconds to black problem. It appears the inverter is on the power supply. Possible causes include a bad CCFL or wiring to the CCFL, or a problem on the inverter. Pictures are always good. Note the links in my signature for information on how to take quality pictures and attach them to your next post.

PlainBill

[BADHIGEEN]

Re: 19 polaroid tla-01911c

Hi guys does any one have a pic of just the back open with all the plugs plugged in.
I took pics when I took it apart but have lost them since then.

[BADHIGEEN]

Re: 19 polaroid tla-01911c

Hi every one its been a while. I bought 2 of these sets at the same time mine lasted a year then I started this thread. The other one I got for mom just crapped out so she bought a new set and gave me the polaroid. Now I remember what a pain it is to get inside this set. Here are the pics I asked for and some of the blown caps. Now mabey I can get the other set going again.

[retiredcaps]

Re: 19 polaroid tla-01911c

Here are the pics I asked for and some of the blown caps.

Replace all the caps (bulging or not) with high quality low ESR caps from this list ...

https://www.badcaps.net/forum/showthread.php?t=2280

If you live in the USA, you can follow PlainBill's instructions and order Panasonic FM or FR caps (use FC is either is sold out or not in stock) from digikey.com.

https://www.badcaps.net/forum/showpo...33&postcount=2

[crazyapple92]

Re: 19 polaroid tla-01911c

Same monitor.

Turns on, mostly white, some black lines, very few color lines. Over a few seconds it fades to completely white.

At first turning it off and on a few times would eventually get it to work (it would display the polaroid logo when it worked). Next time it took a few more on and off cycles, and so on. Now nothing.

Pulled it apart, and I mean PULLED it apart; this thing was very difficult to get apart...

That aside I have 4 bulging capacitors underneath the... aluminum thing with holes in it (what is that, some kind of heat shield?).

Plan to order capacitors and solder sucker but just wanted to see if this was a known problem/ get some advice.

I've never soldered before, much less desolder. But this seems fun and cheep so I'll go with this. Just curious though, will I be OK doing this with no soldering experience?

But HOW OH HOW do you find the capacitor leads on the other side of the board? It's a mess and I have no clue what I'm looking for. I tried matching numbers but they don't match.

Could someone be so kind as to tell me what I'm looking for?

[retiredcaps]

Re: 19 polaroid tla-01911c

I've never soldered before, much less desolder.

This site has an excellent written tutorial on soldering.

https://www.badcaps.net/forum/showthread.php?t=485

CuriousInventor has an excellent video at

http://www.youtube.com/watch?v=I_NU2ruzyc4

[PlainBill]

Re: 19 polaroid tla-01911c

Same monitor.

Turns on, mostly white, some black lines, very few color lines. Over a few seconds it fades to completely white.

At first turning it off and on a few times would eventually get it to work (it would display the polaroid logo when it worked). Next time it took a few more on and off cycles, and so on. Now nothing.

Pulled it apart, and I mean PULLED it apart; this thing was very difficult to get apart...

That aside I have 4 bulging capacitors underneath the... aluminum thing with holes in it (what is that, some kind of heat shield?).

Plan to order capacitors and solder sucker but just wanted to see if this was a known problem/ get some advice.

I've never soldered before, much less desolder. But this seems fun and cheep so I'll go with this. Just curious though, will I be OK doing this with no soldering experience?

But HOW OH HOW do you find the capacitor leads on the other side of the board? It's a mess and I have no clue what I'm looking for. I tried matching numbers but they don't match.

Could someone be so kind as to tell me what I'm looking for?

Pictures of what you are looking AT will help us tell you what to look for.... Note the links in my signature in the post above.

PlainBill

[Leenuks]

Re: 19 polaroid tla-01911c

My brother has had this TV for some time and it was working fine until he decided to get into computing.

I bought him a computer at auction, tested said computer and installed Ubuntu onto it.

The display worked fine for about a week. He wanted to watch tv the next day and tried to turn it on with the remote. Nothing happened. Pressing the power button results in the same thing, nothing.

The tv was turned off when the computer shut down. That is, the computer shutting down turned off the monitor.

I have pulled the power board out and checked all caps for bulging. They look fine. I also resoldered all the caps and transformer connections as well as the pins going to the mainboard.

My questions is; Did the computer shutting off the monitor leave it in a state where it will not turn on again?

More than likely, from reading this thread, it very well could be the caps as they are the ones listed as being faulty anyway.

[PlainBill]

Re: 19 polaroid tla-01911c

My brother has had this TV for some time and it was working fine until he decided to get into computing.

I bought him a computer at auction, tested said computer and installed Ubuntu onto it.

The display worked fine for about a week. He wanted to watch tv the next day and tried to turn it on with the remote. Nothing happened. Pressing the power button results in the same thing, nothing.

The tv was turned off when the computer shut down. That is, the computer shutting down turned off the monitor.

I have pulled the power board out and checked all caps for bulging. They look fine. I also resoldered all the caps and transformer connections as well as the pins going to the mainboard.

My questions is; Did the computer shutting off the monitor leave it in a state where it will not turn on again?

More than likely, from reading this thread, it very well could be the caps as they are the ones listed as being faulty anyway.

No, the computer shutting down should not leave the TV in a permanent 'Off'
condition. Now it the computer and TV were plugged into a power strip, and
your brother turned off the power strip, and you didn't turn on the power strip....

The first test you should have done is check the output voltages of the power supply. One section of it is always on.

PlainBill

[Leenuks]

Re: 19 polaroid tla-01911c

I dont have a multimeter yet. Getting one tomorrow from wallmart.

Either an Equus 3300 Hands free Digital Multimeter or the Equus 3320 Innova Auto Ranging Digital Multimeter.

So will test the power output then.

[Leenuks]

Re: 19 polaroid tla-01911c

The voltages out of the suppy.

The 5v supply was reading 5v.

Both the 12v seemed to vary from 10.92v up to 17.13v with each power cycle. Voltage also seemed stable at whatever they were at the time. EG if it read 10.92v it stayed at that. Pull the power cord out and plug back in resulted in a different voltage.

When I plug in the power the green LED lights up very briefly, less than a second like a flash. The speakers also make a pop sound when plugging into the power outlet.

[littlegrey]

Re: 19 polaroid tla-01911c

Hi all, My name is Jack and I have been a tv tech and owned 3 shops over the past 30 years and had one of these polaroids come in for repair.

Some of the caps were pouched at the top and leaky on the pwr supply board so I replaced all the caps so I wouldnt be in a hit/miss situation.

Well let me back up, it came in for repair due to it shutting down,, from a dead cold start the display would light up approx one minute, then after it was warm it would only stay on for maybe 15 seconds so I figured it was a cap(s).

Well as said I replaced em all to no avail.
so I checked all the diodes/transistors on the pwr supply board and all checked good.
Well I finally put my ear down to the inverter transformers and could hear a almost inaudable arc type sound coming from what sounded like the top of the inverter that feeds the top half of the display and it was silen for about 10 seconds then it would sound like it was arcing.

So I came across this site here and tried the 820k ohm resistor to no avail accross each feed.

So i sat it aside for a few days and was digging for parts out of some boxes I had for another computer repair and noticed i had a 15inch straight pc monitor that the screen was busted on and was for parts, well i tore it apart and used the feeds from it for the lights to try on the polaroid, come to find out it was the 2nd feed from the top line from the inverter to the lights that was bad as it worked and stayed on hooked to the test unit.

So i just thought I would let all here know that ,,thats prolly the problem u may be having however it might not be the same buld giving u this problem as it could be the other top buld or even one of the lower ones

[daleeper]

Re: 19 polaroid tla-01911c

Hi every one its been a while. I bought 2 of these sets at the same time mine lasted a year then I started this thread. The other one I got for mom just crapped out so she bought a new set and gave me the polaroid. Now I remember what a pain it is to get inside this set. Here are the pics I asked for and some of the blown caps. Now mabey I can get the other set going again.

So how do you get inside this set? I have the two screws off the bottom part but can't get the front bezel to come off.

[awace]

Re: 19 polaroid tla-01911c

I'd eyeball the inverter transistors (probably in those 4 pin packages) next to the inverter transformer.

After verifying that the main PSU is functioning of course.

One side of the inverter transformer looks a little dark (maybe a shorted winding)? From here it looks like alot of heat action was going on there.

These Polaroids are just abysmal I like to say they're picture perfect crap .

I would agree its probably the switching transistors in the inverter pcb..
ok the rest of this post is not reply to the quote but opinion ..
Also always use higher voltage caps when replacing them .
As proof of this i had a computer I bought from the HAMVENTION(r) in
DAYTON OHIO it was a pII pcb with a super PUNY 150W power supply talk about small form factor it was a wantabee video machine seemed like a cool idea then but was to small for its time.
anyway I upgraded to a 1000Mhz p III witch worked fine untill a cap expolded SO I REPLACED A 16v 1000uF cap with a huge 1 inch 50v cap this worked great for 1 half hour untill the non icy chokes overheated and i could smell PCB and solder I decided hmm this pcb is only capible of running 533Mhz w out over heating but the point is the bigger cap worked and still is ok now I removed it from that board and was thinking about using it for the polariod tlx-01911c inverter pcb!!...
ALso I didnt know caps were bad In the bad cap manafacture list wow I wonder how long ago that happend when they stole the wrong formula for caps gee almost every thing we have could have crappy caps in it somone here should list a good cap manafacture list..
anyway I replaced all the 470uF caps cause those were venting I didnt buy the 1000uF ones cause Radio shack closed for the night..
tommorow i will try the 1000uF 's to see if that makes it stay on longer.
my next goal is to hook to a nother lcd to steal high voltage for the tubes to see if it stays lit..
anyway tommorow ill replace the 1000uF caps and see what thaT DOES..
ALSO i am going to talk to tv repair shop to see what he thinks and or ness electronics a supply house.. mabie there is a transistor thats weak...

[awace]

Re: 19 polaroid tla-01911c

I dont want to offend anyone..
I cant figure out why the 470uF caps witch fixed my sceptre wlg22 inch gamer inverter would not fix the poloroid one anyway when i replace the 1000uF caps ill look at the transistors.. if its just the inverter pcb if i replace all components it will come back..

[awace]

Re: 19 polaroid tla-01911c

Hi every one its been a while. I bought 2 of these sets at the same time mine lasted a year then I started this thread. The other one I got for mom just crapped out so she bought a new set and gave me the polaroid. Now I remember what a pain it is to get inside this set. Here are the pics I asked for and some of the blown caps. Now mabey I can get the other set going again.

It is a Pain to get into the tv I used a small little monkey rench i got from a grab box in 197? when i was kid never thought i needed it untill LCD came out..
I also used a socket wrench with extention to tighten it and ran finger around the plastic post thinking about assembly line like yea i dont even work there but have to assemble the same way!!!! pissed me off being forced to run my finger a certian way to get castle nut on..

[awace]

Re: 19 polaroid tla-01911c

Hi all, My name is Jack and I have been a tv tech and owned 3 shops over the past 30 years and had one of these polaroids come in for repair.

Some of the caps were pouched at the top and leaky on the pwr supply board so I replaced all the caps so I wouldnt be in a hit/miss situation.

Well let me back up, it came in for repair due to it shutting down,, from a dead cold start the display would light up approx one minute, then after it was warm it would only stay on for maybe 15 seconds so I figured it was a cap(s).

Well as said I replaced em all to no avail.
so I checked all the diodes/transistors on the pwr supply board and all checked good.
Well I finally put my ear down to the inverter transformers and could hear a almost inaudable arc type sound coming from what sounded like the top of the inverter that feeds the top half of the display and it was silen for about 10 seconds then it would sound like it was arcing.

So I came across this site here and tried the 820k ohm resistor to no avail accross each feed.

So i sat it aside for a few days and was digging for parts out of some boxes I had for another computer repair and noticed i had a 15inch straight pc monitor that the screen was busted on and was for parts, well i tore it apart and used the feeds from it for the lights to try on the polaroid, come to find out it was the 2nd feed from the top line from the inverter to the lights that was bad as it worked and stayed on hooked to the test unit.

So i just thought I would let all here know that ,,thats prolly the problem u may be having however it might not be the same buld giving u this problem as it could be the other top buld or even one of the lower ones

Its almost never the LCD that goes bad its the inverter pcb or the florecent tubes unless there are chunks on screen then its the other board or DAMAGE..
AS my X22WG-GAMER sceptre WAs working fine when i got it EXEPT the HDMI NEVER WORKED i DIDNT CARE CAUSE I USE THE VGA ANYWAY IN 1920X1050 66hz CUSTOM nVIDIA MODE... ANYWAY ONE DAY AFTER MOVING FROM PARENTS HOUSE i HAD IT WORKING when i moved from apt to parents house It was sometimes hard to get it to come on this was pissing me off cause I knew it was inverter related it always is!! unless its the bulb.. but since i saw the words POLAROID just fine for seconds i know its the pcb..
but on the sceptre I went online w a nother monitor and looked up and saw someone said check cap 551 or what ever caps SHURE ENOUGH I SWAPED THE NON vented ones w the ones that were not vented and viola it came on.. So the next day I went to radio shack and replaced crappy 16v 470uF caps w 25v 470uF caps its working great now and I SUSPECT IT WILL KEEP WORKING as sceptre monitors all have cap kits avalible on ebay!!!! .. and always use HIGHER voltage cap ok when replacing one.. NOW IF I COLD ONLY FIND A DUAL CAP FOR MY B/w space invaders monitor/...the sceptree came back on and is still working now I wonder if I should retry the HDMI input to see if it works...
as far as the POLAROID Im thinking about contacting the manafacture of the inverter pcb!!! as mabie they had some fix..

[awace]

Re: 19 polaroid tla-01911c

Hi guys does any one have a pic of just the back open with all the plugs plugged in.
I took pics when I took it apart but have lost them since then.

I will take pictures tommorow sat when its light out..

[awace]

Re: 19 polaroid tla-01911c

So how do you get inside this set? I have the two screws off the bottom part but can't get the front bezel to come off.

you just use a flat device and dont scrath but it snaps off by prying cover off start from side you took screws off you probably will butchar it up and scratch the hell out of the sides unless you are super carefull or use a thin putty knife but you can get it apart then you need a socket wrench with extention to get the castle nut off the stand and the stand snaps off the stand then the WHOLE lcd comes off as one piece.. after the CASTLE nut comes off just pry the washers off once you get the castle nut off..