Comments on: Systematic Repair On A Device With The Help Of DCA 75 Pro And Hand Drawn Schematic https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Sun, 01 Dec 2019 18:29:52 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Robert Calk Jr. https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364775 Sun, 01 Dec 2019 18:29:52 +0000 https://jestineyong.com/?p=20703#comment-364775 In reply to Albert van Bemmelen.

Hi Albert. I just found another component that passed with my DCA75 Pro but failed with my lowly little VOM. It is a #QM3016D - TO252, N-ch MOSFET.

Likes(1)Dislikes(0)
]]> By: Albert van Bemmelen https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364588 Mon, 25 Nov 2019 12:54:58 +0000 https://jestineyong.com/?p=20703#comment-364588 In reply to beh.

I may already have mentioned this one before Beh? See this link

Likes(1)Dislikes(0)
]]> By: beh https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364541 Sat, 23 Nov 2019 13:05:57 +0000 https://jestineyong.com/?p=20703#comment-364541 Albert, please tell me what is your amplifier chips tester name? ......thanks ..beh

Likes(0)Dislikes(0)
]]> By: Albert van Bemmelen https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364434 Tue, 19 Nov 2019 14:43:57 +0000 https://jestineyong.com/?p=20703#comment-364434 I also have a lot more digital testers George. Including special ones for Optocouplers, Amplifier chips, Opamps and TTL/CMOS IC's. But for Thyristor/Triacs, and Transistors the Peak DCA75 with the integrated Curve tracer and the SCR100 are likely the best for that category! Although the DCA75 also tests Zenerdiodes upto 12V, and Regulators. But for that I also can use my DY294 semiconductor tester which can do that too and some other tricks.

Likes(0)Dislikes(0)
]]> By: George Greenfield https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364416 Mon, 18 Nov 2019 15:11:18 +0000 https://jestineyong.com/?p=20703#comment-364416 Great repair. You did good getting into the device ! A lot of time that takes the most time of all.
I too am a great fan of Peak hand held test equipment. I have all of them at my work place. Very handy..

George

Likes(1)Dislikes(0)
]]> By: Devon Wilson https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364386 Sun, 17 Nov 2019 03:24:20 +0000 https://jestineyong.com/?p=20703#comment-364386 This is truly a great job. Fortunately, you're methodical and experienced in electronic troubleshooting. Thanks for sharing.

Likes(2)Dislikes(0)
]]> By: Robert Calk Jr. https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364381 Sat, 16 Nov 2019 20:25:58 +0000 https://jestineyong.com/?p=20703#comment-364381 Good job, Albert! I have never opened up one of those devices before.

Likes(1)Dislikes(0)
]]> By: Beh https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364376 Sat, 16 Nov 2019 16:57:16 +0000 https://jestineyong.com/?p=20703#comment-364376 New electtonic mashines are getting more and more complicated and most time the user do not know how to use the device they think the mashine is not working Albert i admire your courage for opening this machine because these machine are not made for repair congratulations for your discovery

Likes(2)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364375 Sat, 16 Nov 2019 16:36:43 +0000 https://jestineyong.com/?p=20703#comment-364375 An exhaustive description of a strenuous trouble shooting done on a device, which I have never even heard of! The schematic looks like a computer graphic, what I mean, so perfect! Hat's off my friend! I am lost! Well done, might be a praise too meagre for a fantastic job like this!

Likes(3)Dislikes(0)
]]> By: Albert van Bemmelen https://jestineyong.com/systematic-repair-on-a-device-with-the-help-of-dca-75-pro-and-hand-drawn-schematic/comment-page-1/#comment-364372 Sat, 16 Nov 2019 11:26:04 +0000 https://jestineyong.com/?p=20703#comment-364372 In reply to Andrea Del Corso.

Devices like these we indeed not often see in repair. Probably because they are still quite expensive and not the typical type of bodycare products most people normally would buy. Modern products like these are heavily controlled around complex firmware in a special designed microcontroller. Which makes fixing faults in that design impossible and limits any repair to component level repair only.

Likes(4)Dislikes(0)
]]>