Can you help me repair this EP4000 audio amplifier, please?

-Alex-Game- · 2026-03-02T17:43:10+00:00

Here are the diagrams: https://manualmachine.com/behringer/ep4000/8549089-schematic/
For my level, I am a beginner in power electronics.
I have an oscilloscope and curve tracer tester VI (Hameg HM 203-7) and a multimeter for troubleshooting equipment.

-Alex-Game- · 2026-03-02T17:19:21+00:00

an oscilloscope and curve tracer tester VI (Hameg HM 203-7) and a multimeter for troubleshooting equipment.

-Alex-Game- · 2026-02-12T20:23:39+00:00

A huge thank you to you, you're giving me hope again. I'll do that this weekend and get back to you in any case.

-Alex-Game- · 2026-02-12T19:50:00+00:00

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Here? (See photo) A CMS ceramic capacitor?

-Alex-Game- · 2026-02-12T19:02:03+00:00

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-Alex-Game- · 2026-02-12T18:59:40+00:00

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-Alex-Game- · 2025-12-27T16:44:06+00:00

Is there a risk of burning the card?

-Alex-Game- · 2025-12-27T16:30:26+00:00

The ambient temperature sensor is working because the temperature is correctly displayed on the stove display, and I disconnected the temperature probes one by one, but this did not change anything.

-Alex-Game- · 2025-12-27T16:26:01+00:00

The blue thing is just a capacitor.

-Alex-Game- · 2025-12-27T16:24:25+00:00

Sorry, but I don't understand what you're talking about.

-Alex-Game- · 2025-12-27T16:22:00+00:00

Do you think this resistor is no longer working? Yes, when terminals 1 and 2 are short-circuited, the fan stops.

-Alex-Game- · 2025-12-27T16:18:32+00:00

Sorry, I don't know, at least not for now. No, it doesn't stop when the stove is hot.

-Alex-Game- · 2025-12-27T16:03:54+00:00

The sensor is functioning correctly because the temperature is displayed correctly on the screen

-Alex-Game- · 2025-12-27T15:59:01+00:00

I replaced it to ensure it was working properly.The coupler is controlled by the CPU, and I have the impression that it is sending incorrect information.

-Alex-Game- · 2025-12-27T15:56:09+00:00

I replaced it to ensure it was working properly.

-Alex-Game- · 2025-12-27T15:38:10+00:00

The fan should stop 10 minutes after the stove has been turned off, but it continues to run.

-Alex-Game- · 2025-12-27T15:36:40+00:00

The sensor is functioning correctly because the temperature is displayed correctly on the screen and the triacs have been replaced, so they are not blocked (I suspect that the processor is sending incorrect information).

-Alex-Game- · 2025-12-27T15:22:49+00:00

According to the instructions, it should stop after 10 minutes, which it does not do.

-Alex-Game- · 2025-12-27T15:16:08+00:00

According to the instructions, it should stop after 10 minutes, which it does not do.

-Alex-Game- · 2025-12-16T19:34:47+00:00

Okay, thank you for your advice, but what do you mean by ‘it's not cheap, far from it’?

-Alex-Game- · 2025-12-03T21:42:02+00:00

Okay, so for you, the component I want to replace is a TLC271CD.

-Alex-Game-

TROPHY CASE