ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

[budm]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Is it because they are not affected by the voltage difference ? I tried controlling my PTC with a variac but it still got the same temperature.
Yes can confirm, setting the voltage to 120V with my variac and the heater still gets to temperature.

Yes, I looked at those, then wondered how I would mount them.

Thanks for testing it out at 120VAC, I will order a couple to play with.

[stj]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

i said $, not £

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

sale starts in 2 days - $4!!
https://www.aliexpress.com/item/32974173898.html

It was £3.50 at the beginning of the week. Nothing like putting the price up just before a sale !

[stj]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

sale starts in 2 days - $4!!
https://www.aliexpress.com/item/32974173898.html

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

They sure have lots of 230V version, 120V seems to be hard to come by on Ali.

Is it because they are not affected by the voltage difference ? I tried controlling my PTC with a variac but it still got the same temperature.
Yes can confirm, setting the voltage to 120V with my variac and the heater still gets to temperature.

Here is a 24 volt version of it

It not quite the same size but it should work

I ordered 10 of them

http://s.aliexpress.com/uie6nue2

Yes, I looked at those, then wondered how I would mount them.

[sam_sam_sam]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Here is a 24 volt version of it

It not quite the same size but it should work

I ordered 10 of them

http://s.aliexpress.com/uie6nue2

[budm]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

They sure have lots of 230V version, 120V seems to be hard to come by on Ali.

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

https://www.aliexpress.com/item/32974173898.html

item #32974173898

They work better if the screws and feet are mounted the other way round so they raise the plate off the worktop and the narrow middle piece is used for the heat rather than the larger size.
I have a thermocouple jammed inside to get an idea of the temperature.
I intent do connect it to a PID and a relay for slightly better control but it doesn't burn FR4 unless it's left on too long.

[budm]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

https://www.aliexpress.com/item/32974173898.html

item #32974173898

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

I do use a bench power supply for my testing so perhaps they are failing then rather than with the TV powering then. I haven't had any failures when testing for 24 hours

[WhiteWolfHellas]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

I warranty my work but nothing is every guaranteed, even new can fail.
If I stress them and they die in a week I replace them, but I haven't had to yet.

So, for example in a 10 led strips TV, only 3 leds are burned out. You just replace the 3 leds, leave the TV on at 100% backlight for 24 hours and if there are more to die, they die, you replace them and leave the TV on for another 24 hours? If it still works, you assemble the TV and call it a day?

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Is it guaranteed that with this method (replacing just the dead ones and leaving the TV on at 100% backlight for 24 hours) the about to die old ones will die for sure? I mean what if you stress them and they die a week down the line? You'll have to repeat the proccess.

I warranty my work but nothing is every guaranteed, even new can fail.
If I stress them and they die in a week I replace them, but I haven't had to yet.

[WhiteWolfHellas]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Not really, after repairing the failed ones I run the backlights at 100% for 24 hours. Any further failures are replaced before they are turned down.

Is it guaranteed that with this method (replacing just the dead ones and leaving the TV on at 100% backlight for 24 hours) the about to die old ones will die for sure? I mean what if you stress them and they die a week down the line? You'll have to repeat the proccess.

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Just the damaged ones only? Strange that you haven't got returns because the old ones tend to die shortly after. I have had returns by replacing just the damaged ones so I stopped using this repair method.

Not really, after repairing the failed ones I run the backlights at 100% for 24 hours. Any further failures are replaced before they are turned down.

[WhiteWolfHellas]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Just the damaged ones usually.
The LED strip is resting on a hotplate, the solder is liquid.

Just the damaged ones only? Strange that you haven't got returns because the old ones tend to die shortly after. I have had returns by replacing just the damaged ones so I stopped using this repair method.

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Just the damaged ones usually.
The LED strip is resting on a hotplate, the solder is liquid.

[WhiteWolfHellas]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Apologies, I shortened all the tracking info from the link and trimmed too much.
https://www.aliexpress.com/item/1pc-...974173898.html

I remove the LED with the heater but depending on how much solder is left I then remove all the leaded solder and replace with lead free.
When attaching a new LED it's staying well within reflow temperature parameters.

Yes I turn down the back light.

Do you replace the shorted LEDs, or do you replace every LED in the strip, even the good ones with new? Plus, isn't in more convinient to use liquid solder?

[diif]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Thanks for the reply, but the link is not working.
Glad to hear no comebacks even after greatly heating up the new led. Do you lower the backlight after the repair in order for the leds to last longer?

Apologies, I shortened all the tracking info from the link and trimmed too much.
https://www.aliexpress.com/item/1pc-...974173898.html

I remove the LED with the heater but depending on how much solder is left I then remove all the leaded solder and replace with lead free.
When attaching a new LED it's staying well within reflow temperature parameters.

Yes I turn down the back light.

[R_J]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

Is this it? https://www.aliexpress.com/item/PTC-...27023b32CUMREi

[WhiteWolfHellas]

Re: ShopJimmy LED Strip Rework Station - Single LED Replacement Tool

I use one of these https://www.aliexpress.com/item/1pc-...2974173898.htm which is the ShopJimmy hotplate but without the expense.
It removes LEDs from FR4 and aluminium with ease leaving no marks at all.
No, no comebacks.

Thanks for the reply, but the link is not working.
Glad to hear no comebacks even after greatly heating up the new led. Do you lower the backlight after the repair in order for the leds to last longer?