What do you think of TV LED tester eBay

[ReeceyBurger123]

Re: What do you think of TV LED tester eBay

Just use a dmm lol and for 5v leds a old pc psu with come bodged wires cheap but it works.

[stj]

Re: What do you think of TV LED tester eBay

that's not what this is,
it will power a whole series-string without stripping the panel.

[sam_sam_sam]

Re: What do you think of TV LED tester eBay

It came in the mail today--------->>>>>>>

I have tried this unit and a couple of comments about how it works------->

One thing I have seen with unit it works real good if it only has one row another words
Series string

But it dose not work as well if there are in parallel then LEDs do not get very bright you can see if all LEDs are working or not which is good thing


Are there any LED testers that would do parallel LED strings ---->>>> just asking

[sam_sam_sam]

Re: What do you think of TV LED tester eBay

Great!!...BTW mine did come with the ac chord....I replaced it wit a longer one....that's why I forgot. Good Luck!!

Yea it came with a cord and yes it is short I am going to find a longer cord and I will also put a ON / OFF switch on the cord as well

I also going to buy a second one and put alligator clips on this one so do have keep pulling out leads and break them

[snot522]

Re: What do you think of TV LED tester eBay

same as mine great tools....

http://i251.photobucket.com/albums/g...psxhmzkis8.jpg

http://i251.photobucket.com/albums/g...pshluvqycb.jpg

[budm]

Re: What do you think of TV LED tester eBay

Can you show me the parallel connected LED strings? If they use more than one strings and they are not connected in series to form one big long string each string will have its own MOSFET and current sensor for each string so it this the case to you to locate the Cathode return side of the each string of LED so you can just light up just one string only, it will be very bad design to have the LED strings connected directly in parallel, if one goes open circuit the current on the working string will go up and it is also hard to get the match the total Vf of each string to get each string to have equal current flow.

[sam_sam_sam]

Re: What do you think of TV LED tester eBay

Can you show me the parallel connected LED strings? If they use more than one strings and they are not connected in series to form one big long string each string will have its own MOSFET and current sensor for each string so it this the case to you to locate the Cathode return side of the each string of LED so you can just light up just one string only, it will be very bad design to have the LED strings connected directly in parallel, if one goes open circuit the current on the working string will go up and it is also hard to get the match the total Vf of each string to get each string to have equal current flow.

Here is the board in question as you can see there only drop down resistor
So is there any kind of tester that would work this kind of board

The way this board is set this see a lot of LED board set up

[budm]

Re: What do you think of TV LED tester eBay

Those LEDS are not connected directly in parallel, each set has its own limiter resistors so this kind of the set the total current draw will be higher than that LED tester can deliver.
You will have to put the Red probe of the tester on the Anode of the second LED of the string you want to test, the black probe on the Cathode of the last LED in that string, then you can test the first LED of that string by itself.

[sam_sam_sam]

Re: What do you think of TV LED tester eBay

Thanks for the feedback

[budm]

Re: What do you think of TV LED tester eBay

BTW, if you check the current draw of that LED panel then you will see why that tester cannot drive that LED panel.