Comments on: How To Repair Mixer Power Amplifier https://jestineyong.com/how-to-repair-mixer-power-amplifier/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 07 Sep 2020 15:58:58 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Adekunle Adegoke https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-370887 Mon, 07 Sep 2020 15:58:58 +0000 https://jestineyong.com/?p=16413#comment-370887 Please my mixer amplifier power indicator light is blinking and sound is not coming out.

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]]> By: Ulises Aguilar Pazzani https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328992 Tue, 30 Jan 2018 03:49:49 +0000 https://jestineyong.com/?p=16413#comment-328992 Mr Suranga grate job Sir

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]]> By: Henrique Jorge Guimarães Ulbrich https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328955 Mon, 29 Jan 2018 14:08:07 +0000 https://jestineyong.com/?p=16413#comment-328955 In reply to Imraz.

Yes, Mr. Imraz. I don´t believe the fuse is original. Obviously, the manufacturer did the right. Later, a bad technician changed this situation.

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]]> By: Robert Calk https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328902 Sat, 27 Jan 2018 14:42:31 +0000 https://jestineyong.com/?p=16413#comment-328902 Good job Suranga.

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]]> By: Imraz https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328895 Sat, 27 Jan 2018 09:25:49 +0000 https://jestineyong.com/?p=16413#comment-328895 In reply to Henrique Jorge Guimarães Ulbrich.

Possibility of a high rated fuse installed before it reach the repair desk

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]]> By: Tyrone. https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328862 Fri, 26 Jan 2018 22:24:06 +0000 https://jestineyong.com/?p=16413#comment-328862 Very good Suranga.

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]]> By: Albert van Bemmelen https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328860 Fri, 26 Jan 2018 21:45:58 +0000 https://jestineyong.com/?p=16413#comment-328860 Indeed a lucky customer finding only a bad rectifier bridge being defect. And a successful repair. Strange though that it only caused the transformer to overheat without blowing any primary or secundary fuses, or worse causing fire. Especially seeing it is an expensive professional audio set.
This way it looks like being designed quite unsafe which is the reason why fuses are used. The question always remains if we should alter the original design. But I guess it won't harm to warn the owner why he was lucky this time. And maybe change the 'safety' of the circuit by adding fuses or adjust their values if the owner appreciates the extra time that is involved to change it. Including some experimenting time necessary to check if the changing of the fuses works. A fuse is less expensive than a new transformer.

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]]> By: Henrique Jorge Guimarães Ulbrich https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328859 Fri, 26 Jan 2018 21:20:22 +0000 https://jestineyong.com/?p=16413#comment-328859 If the bridge rectifier was completely short, the fuse would have to be opened. Why this did not happened?

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]]> By: Albert Hoekman, Holland https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328845 Fri, 26 Jan 2018 18:05:09 +0000 https://jestineyong.com/?p=16413#comment-328845 Good article and fine pictures, thanks for sharing.
What about the transformer? Are you not afraid the transformer has some shorted windings?

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]]> By: AdamS https://jestineyong.com/how-to-repair-mixer-power-amplifier/comment-page-1/#comment-328832 Fri, 26 Jan 2018 15:56:36 +0000 https://jestineyong.com/?p=16413#comment-328832 Nice repair Suranga, but disappointing there were no fuses on the transformer outputs - bad design!

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