Macgyver-ing LED backlights for Sharp LC-50UB30U

[Pioneerx01]

I have Sharp LC-50UB30U on my table. The backlights (IC-A-VZAA50D552) are shot, over half LED chips are out. No one seems to have them in stock, past sales history looks almost empty and the prices are astronomical if you want to put them together one strip at a time.

This TV runs 2 LED channels with 32x 3V LED in series so 96V per channel. Are there any alternatives I can use to get this TV operational with some other LED strips or some other method I am not aware of?

My first thought was to use 12V LED strips from eBay (see attached) and put 8 on each channel in series for 96V total. Anyone ever tried that? I have used them before on non TV related projects, they are pretty bright.

[heavymachines]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I don't see why you cant use led strips from other tvs just two wire per strip.

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Because of the voltage. This TV has 8 LEDs per strip, 2 strips per row and 2 rows per channel. 32 LED per channel with 3V each is 96V.

I can't find another LED set that runs 8 LED per strip, 16 per row to make sure I don't overpower the LEDs. Plus there is the issue of the length, some trips are longer/shorter than others yielding uneven coverage.

[diif]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

The spacing is wrong and there are no lenses on the 12v LED strips.

A bit more time consuming but I'd remove the lenses, replace the individual LEDs then glue the lenses back on.

[mmartell]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

If you want to McGuyver it cut a hole in the back and use one of these

[Andrew F. Ali]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I have used the universal 32" LED strips from China on TVs before without event, so far. Even on 50" TVs.They have available strips with 6, 8 and 10 LEDs per strip. You may have to cut new holes in the Reflector paper to accommodate the lens. Stagger the strips i.e. the t1st row goes fully right then the next row fully left. You would also have to do some math to work out the No. of LEDs and the voltage per row. The diffuser sheet will spread the light evenly and fill the blank areas. It will; take some thought but it can be done.

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

universal 32" LED strips from China

I will try that route with hesitation. I have ordered a 10 pack of these strips and I hope they are color correct. Last time I ordered "compatible" replacement strips for another TV (40" Samsung with those angled backlights) they were purple like you would not believe.

[Andrew F. Ali]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Did you get the 10 LED per strip or the 8??

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I actually got the 10 (I know wait) Each strip is 3" longer that the stock, so 6" overlap per row. I bought 10 per strip, and then I will cut the last two off, making the strip 8 and also shorter, so no overlap. Then its easier to "adjust" the reflector sheet as it is all in one row.

Maybe I will keep one strip per row with 9 LED, lowering the average voltage the LED chips and they may last longer.

[Andrew F. Ali]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I wont recommend cutting the strip. Put one above and one below. if you know how I mean. I usually buy the 10LED per strip myself. The original strips were how many. With a 50" it would have a left half and a right half. How many on the left and how many on the right?

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Original is: 8 per strip, 2 strips per row, 4 rows total.
Based on the description the strips can be cut to shorter length. That's why I got 10 per strip to make then into 8 and shorter as well. I am worried that if I overlap, the center of the screen will be brighter than the rest. I could tape them over, but I like my solution better

[Andrew F. Ali]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

OK. I guess you could cut the strips to get the 16 a connect both strips in series. As I said before even if there is a gap stagger the strips and the Diffuser sheet will spread it out evenly. It works for me and it will work for you too.

[Michale32086]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I won't be much help, but I LOVE the way you think!!!

I have had to rewire many an LED TV with non-standard strips to get them working..

Kindred spirits.

[Andrew F. Ali]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

+100

[Michale32086]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

I will try that route with hesitation. I have ordered a 10 pack of these strips and I hope they are color correct. Last time I ordered "compatible" replacement strips for another TV (40" Samsung with those angled backlights) they were purple like you would not believe.

Oh.. I would believe it..


https://www.badcaps.net/forum/showth...t=Vizio+Purple

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Update Time:

I got the Chinese universal strips in main yesterday, they were shipped in PVC tube and arrived A-OK. Their design reminds me of the ones you see in Insignia and Hisense TVs. The color temperature is pretty spot on, and they are very bright. So much so that I currently have TV on lowers backlight setting and its about right. They came with adhesive tape on the back, but i still used mine as I trust it more.

Simple design and layout, you can cut them anywhere and jump the connections between the units, followed by generous coating of liquid electric tape to make it stick. Of course the reflector did not fit, so it had to be "modified." Once put together the light is even, you can't really see there are aftermarket backlights in the TV.

When they were on full brightness, while the panel was still off, they were getting pretty warm to the touch. I hope they will not burn out withing a year. Only 5 screw were left after the project I still have to get a remote.

[budm]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Link to the seller of these strips please, thanks.

[Pioneerx01]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

Link to the seller of these strips please, thanks.

I got these myself: https://www.ebay.com/itm/272893652959

Search for "Universal LED Backlights" There are few versions and lengths, some are 6, 7, 8 & 10 LEDs per strip and strips vary in length.

[budm]

Re: Macgyver-ing LED backlights for Sharp LC-50UB30U

10 LED strips with 10 LED per strip for $33 is quite good price, thanks.