Comments on: JEDIA  JPA-480CP Amplifier Repair (Protection Mode Problem) https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Tue, 18 Aug 2026 17:29:05 +0000 hourly 1 https://wordpress.org/?v=5.4.23 By: GAby https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-459288 Tue, 18 Aug 2026 17:29:05 +0000 https://jestineyong.com/?p=19174#comment-459288 Thank you very much. I have repaired one with the same problem

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]]> By: Jens https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-439616 Tue, 26 Nov 2024 14:45:46 +0000 https://jestineyong.com/?p=19174#comment-439616 Great job Ian! I had a similar problem with a JPA-2120-2240CP amplifier.
This is dual channel, but same circuitry. Both HIC-PWRL (one for each channel) delivered at the same time +13 V and -5 V. This lead to oscillating effects of the amplifier; internal fuses were blown. After soldering in new capacitors everything works fine!
Thank you very much!
By the way, if someone don´t want to repair the HIC-PWRL it is possible to use a small DC-DC converter

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]]> By: Ray https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-431199 Mon, 26 Aug 2024 19:08:58 +0000 https://jestineyong.com/?p=19174#comment-431199 In reply to Ian Corry.

Hi Ian
Is there any chance you have the service manual for the amp as I've got one in for repair and the resistor in line with the toroidal tx is shattered and it's a 5 min job that we all get from friends and family.

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]]> By: alik https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-414995 Fri, 01 Dec 2023 08:47:55 +0000 https://jestineyong.com/?p=19174#comment-414995 I need help. I search shem jedia jpa-480dp. Power board. Soft start is broken.

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]]> By: Adrian Anthony Alexander https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-404838 Mon, 31 Jul 2023 07:57:09 +0000 https://jestineyong.com/?p=19174#comment-404838 Great Job!!! Especially with those HIC Hybrid modules. Not much information out there on those......

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]]> By: Pang nguyen https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-376199 Wed, 13 Oct 2021 12:28:01 +0000 https://jestineyong.com/?p=19174#comment-376199 In reply to Robert Calk Jr..

Please! Help me a schematics for Jidea JPA-480 amplifier

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]]> By: hamou https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-357944 Fri, 24 May 2019 01:23:11 +0000 https://jestineyong.com/?p=19174#comment-357944 thank you. have you its schema ????

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]]> By: Ian Corry https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-354901 Mon, 08 Apr 2019 22:28:31 +0000 https://jestineyong.com/?p=19174#comment-354901 In reply to Humberto.

Thanks for your comments Humberto 🙂

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]]> By: Ian Corry https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-354900 Mon, 08 Apr 2019 22:26:48 +0000 https://jestineyong.com/?p=19174#comment-354900 In reply to Mihai.

Many thanks.. glad you liked it.

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]]> By: Ian Corry https://jestineyong.com/jedia-jpa-480cp-amplifier-repair-protection-mode-problem/comment-page-1/#comment-354899 Mon, 08 Apr 2019 22:24:47 +0000 https://jestineyong.com/?p=19174#comment-354899 In reply to Yogesh Panchal.

Hi Yogesh. 000 marked resistors are 0 ohms and simply used as a link.

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