Comments on: Servicing 48 LED Random LED Light https://jestineyong.com/servicing-48-led-random-led-light/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 06 Jul 2018 13:19:29 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Christian Robert Adzic https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-337421 Fri, 06 Jul 2018 13:19:29 +0000 https://jestineyong.com/?p=17106#comment-337421 Great Job!
The ic could be a uC, maybe some sort of attiny 85 or so.
Checking the circuit could be maybe identify if it is a attiny 85 or so.
In many china tools could be found a uC that family.
Probably also a clone/copy of the original...

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]]> By: Christian Robert Adzic https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-337420 Fri, 06 Jul 2018 13:17:02 +0000 https://jestineyong.com/?p=17106#comment-337420 In reply to Michael Ripley.

In automotive ecu's a very common labeling is a so called "masking".
Some of masked parts list can be checked here:
http://www.autotronika.pl/files/file/MASK_SETS_by_Autotronika.pdf

Also the same situation on PC mother board, laptops etc...

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]]> By: HAKAN https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335740 Sat, 02 Jun 2018 11:40:25 +0000 https://jestineyong.com/?p=17106#comment-335740 In reply to Parasuraman.

Thanks

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]]> By: Parasuraman https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335689 Fri, 01 Jun 2018 14:33:06 +0000 https://jestineyong.com/?p=17106#comment-335689 In reply to Hakan.

Because, the PCB tracks were not good quality and I wanted to avoid a resolder in case the IC fails and I have to replace it from salvaged similar lights.

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]]> By: Hakan https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335676 Fri, 01 Jun 2018 08:25:26 +0000 https://jestineyong.com/?p=17106#comment-335676 Hi why did you use IC SOCKET.. Was the IC damaged..

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]]> By: Robert Calk Jr. https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335661 Fri, 01 Jun 2018 01:29:00 +0000 https://jestineyong.com/?p=17106#comment-335661 In reply to Michael Ripley.

It's also annoying when the PCB and the schematic doesn't match.

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]]> By: Michael Ripley https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335589 Thu, 31 May 2018 11:48:56 +0000 https://jestineyong.com/?p=17106#comment-335589 The pcb was printed with "30K" under the resistor. Just an observation.

Badly marked IC are very annoying. Very common in automotive ECU and increasingly seeing it on laptop motherboards.

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]]> By: Suranga Electronics https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335588 Thu, 31 May 2018 11:38:02 +0000 https://jestineyong.com/?p=17106#comment-335588 Good Reair Job Mr,Parasuraman

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]]> By: Parasuraman https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335587 Thu, 31 May 2018 11:33:47 +0000 https://jestineyong.com/?p=17106#comment-335587 In reply to Albert.

Possible!

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]]> By: Parasuraman https://jestineyong.com/servicing-48-led-random-led-light/comment-page-1/#comment-335586 Thu, 31 May 2018 11:32:13 +0000 https://jestineyong.com/?p=17106#comment-335586 In reply to Paul Preston.

Kindly zoom and see the image of IC. It's readable.

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