Comments on: Two Cracked Diodes Found In Zika Welding Machine https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Tue, 16 May 2023 06:30:38 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Nenad Iliev https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-402057 Tue, 16 May 2023 06:30:38 +0000 https://jestineyong.com/?p=25216#comment-402057 Hello, I replaced these diodes in my welding machine but they failed again. The resistor is ok. I had cracked capacitors in the Zobel network of the MOSFETs. After replacing them, one of the MOSFETs failed. I've found some schematics of a similar machine that has a TVS diode connected to those two diodes but on mine it goes to a 100uH inductor and then to the main control board. After that it goes to a capacitor, which is not shorted. From where could this current be coming from that keeps burning the diodes?

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]]> By: Jai Etwaroo https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-375007 Wed, 09 Jun 2021 22:26:47 +0000 https://jestineyong.com/?p=25216#comment-375007 Nice job Waleed , I have noticed that you have repaired many of this type of welders in the past .

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]]> By: Yogesh Panchal https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-374960 Sun, 06 Jun 2021 15:33:17 +0000 https://jestineyong.com/?p=25216#comment-374960 Waleed,
Excellent! troubleshooting and repair.

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]]> By: Waleed Rishmawi https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-374708 Mon, 31 May 2021 06:51:13 +0000 https://jestineyong.com/?p=25216#comment-374708 In reply to Albert van Bemmelen.

Albert: actually man people suggested to me to write a book and I got the same from you, that is such an encouragement I appreciate so much. have a blessed day

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]]> By: Waleed Rishmawi https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-374707 Mon, 31 May 2021 06:49:39 +0000 https://jestineyong.com/?p=25216#comment-374707 In reply to Parasuraman S.

Parasuraman: thanks man for the encouragement. we work together for the good or man kind. LOL. have a blessed day

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]]> By: Albert van Bemmelen https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-374703 Mon, 31 May 2021 05:08:17 +0000 https://jestineyong.com/?p=25216#comment-374703 You obviously can write a very thick repair book on fixing Welding machines by now. And this particular machine obviously got overheated because the Fan no longer cooled the internal machine parts down. You again very quickly found the real cause of parts that needed replacements by experience in no time!

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]]> By: Parasuraman S https://jestineyong.com/two-cracked-diodes-found-in-zika-welding-machine/comment-page-1/#comment-374699 Mon, 31 May 2021 00:21:29 +0000 https://jestineyong.com/?p=25216#comment-374699 Two welding experts living side by side, VOW! One an electronic wizard and another one user expert! A good combination for welding together all defective welding machines! Well done, dear friend!

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