Re-visit JCC Led floodlight repair attempt | JC45206

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Here's the follow up to my last video where I attempted to repair this LED floodlight.
I want to say a big thankyou to everyone who offered advice and help in the comments section on the first video. I'd like to say I did you all proud but as you'll find out... well I won't spoil the surprise.
SUBSCRIBE: / @philipbryden
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Website: www.philbryden.co.uk/
Twitter: / philbryden
Instagram: / pbryd
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Tools:
Multimeter: AstroAI Digital Multimeter, TRMS 6000
Soldering Iron: KSGER T12 Soldering Station
Hot air station: Quick 857DW+
Bench PSU: Tenma 72-2540 30V 5A
Digital Oscilloscope: Rigol DS1054Z
Desolder pump: Duratool
Miscroscope: • Micro soldering set up...
Disclaimer:
The information provide in this video is for entertainment use only.
I am not a professional and any methods I use might not be the correct ones.
I will not accept any responsibility for loss, damage or injury as a result of the information provided in this video.

Развлечения

Опубликовано:

23 фев 2024

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Комментарии : 33

@matthewmaidment8464 5 месяцев назад

Such a shame Phil, kudos for persevering with it.

@PhilipBryden 5 месяцев назад

I don't like giving up. There's and LED tester on the way and I'm contemplating bridging the burnt LEDs, assuming the others would be able take the extra load the 4 missing ones aren't using.

@GadgetUK164 5 месяцев назад

These types of LED do need a higher voltage! I suspect one or more of them might have been on its way out, or when you had them covered whilst testing, they overheated!? They do give off a lot of heat! When one pops, it can lead to the others failing as the voltage goes up for the rest as one shorts! Very cool to have a go at trying to fix this - the journey is sometimes more rewarding than the destination! Well done =D PS: Better to re-fit a replacement cap there too, that might not have helped matters!

@PhilipBryden 5 месяцев назад

You're quite right. This one is definitely more about the journey than the destination. The leds really light up well with my new LED tester. I've replaced that cap with a different one. I'd like to remove those blown leds and replace them with some resistors next.

@probablycantfixit6426 5 месяцев назад

I really enjoy your videos, Philip. Very logical. You go the extra mile and make them quite interesting.

@PhilipBryden 5 месяцев назад

Thank you very much. It's fun fixing things as you know, but it's only when it gets challenging that you get the chance to learn something new. That's why I put a bit more into this than a floodlight probably deserves. And I'm still none the wiser, it sucks!! lol

@probablycantfixit6426 5 месяцев назад

You keep doing what you are doing. You remind me of Vince.@@PhilipBryden

@PhilipBryden 5 месяцев назад

Thank you. You've got a new sub from me too.

@probablycantfixit6426 5 месяцев назад

Thanks, man. You didn't have to do that, but I appreciate it nonetheless. I am far less logical than you, but I am learning.@@PhilipBryden

@frozerinosrepairs 5 месяцев назад

Very interesting video 😄😄😄

@PhilipBryden 5 месяцев назад

Thank you Froz. Mistakes were made but that's how we learn.

@yanghao8351 5 месяцев назад

Thanks for the video. Maybe it was the chip? The LED needing 15v seems odd to me. I could be the LEDs were low quality. From the end of the video 30:41 it looks like the lower right row did not have the LEDs on before the pop.

@PhilipBryden 5 месяцев назад

Looking back they didn't look on. If the chip was shorted, it didn't heat up like I would expect it to. The usual IPA method to look for hot spots didn't reveal anything. Perhaps there's a couple of issues with the board.

@cheapasstech 5 месяцев назад

Just tested the bottom heater on the BGA machine to make soldering on these easier - did burn my fingers tho but a lot quicker !

@PhilipBryden 5 месяцев назад

There are some hot plates on Aliexpress for silly cheap money. www.aliexpress.com/item/1005002009167032.html?spm=a2g0o.productlist.main.49.6aa8EYqnEYqnLN&algo_pvid=1c21f853-9c1d-4557-ae21-d0cc4c4211ac&aem_p4p_detail=202402250450176392007045093240003026968&algo_exp_id=1c21f853-9c1d-4557-ae21-d0cc4c4211ac-24&pdp_npi=4%40dis%21RON%2181.25%2140.60%21%21%2117.29%218.64%21%40211b600a17088654175602052e26ce%2112000023097388144%21sea%21RO%213652023563%21&curPageLogUid=BBCCGBBoS0O1&utparam-url=scene%3Asearch%7Cquery_from%3A&search_p4p_id=202402250450176392007045093240003026968_25

@wisher21uk 5 месяцев назад

Nice try Philip, You can unsolder those popped LEDs and just bridge the pads it will work, they were probably failing! Definitely been on 3 phase, use an upside down iron and heat the plate to remove faulty LEDs Maybe buy a led tester 😊

@PhilipBryden 5 месяцев назад

You can buy an LED tester? I've never heard of them lol. In this video I successfully demonstrated the importance of using a load lamp and why you shouldn't rush a repair lol. I'd like to bridge the LEDs, get it half working again and try and figure out where the short it. I might look at some small pre-heaters in the meantime.

@wisher21uk 5 месяцев назад

@@PhilipBryden hi Philip this is one in action ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IuHZBE2NP7c.htmlsi=OpuIrvpGMxIg5ZAi

@wisher21uk 5 месяцев назад

@@PhilipBryden I did reply with a link but it’s not showing up, you may find it in a folder on your RU-vid dashboard but if you search “using a led tester” you will find one, I have one you can borrow if need be, or demonstrate how they work 😊 What wattage bulb do you use should be 100w plus

@PhilipBryden 5 месяцев назад

I'm watching the video on the tester now. My bulb is a 40W I think. But with incandescent bulbs not being manufactures now, I was wondering if there was a commercial equivelant to the series lamp.

@wisher21uk 5 месяцев назад

EBay have them search 100w incandescent bulb 😊

@jackipiegg 5 месяцев назад

29:58 I'm so confused, you took out the snubber capacitor out, followed by verifying its not in spec and rather than replacing it, you plug it in?!

@PhilipBryden 5 месяцев назад

Yeah. AFAIK the cap is a filter for voltage spikes, I removed it to check to see if it was causing a short. Ultimately I don't think (don't quote me on this) the missing cap was causing the problems the board was having. If someone can add their opinion or correct me if I'm wrong, I'd be grateful.

@jackipiegg 5 месяцев назад

@@PhilipBryden From looking it objectively, I'm pretty sure that cap was the main fault since it briefly lit up everything (so the LEDs were not faulty in the first place). The control IC probably couldn't keep up with the voltage spikes and made the voltage cascade to the LEDs. Also it make sense a HV faulty capacitor would take 50% of the wattage of your lamp load which would explain the 120V drop. Here's where a thermal camera would be useful since splashing alcohol on mains is NOT a smart thing to do.

@PhilipBryden 5 месяцев назад

Ah thank you. I have been able to find a replacement cap, so I can take another look when my LED tester arrives.

@PhilipBryden 5 месяцев назад

Cap replaced. Light on series lamp stays off. 240V at input. 5V present on all mosfets gates. I need to jump or replace the four faulty LEDS next.

@jackipiegg 5 месяцев назад

@@PhilipBryden Try not to bridge it. A fat resistor would be better if you have it. Also don't turn it for too long, the resistor will be mad hot if its low wattage.