COUGAR 2000W 4-Channel Amplifier Damaged by IRFZ44 After Car Ignition

Question

Hi, I have a problem with the amplifier COUGAR 2000W 4 channel amplifier I bought it abroad beautifully played in a Honda Civic car until I connected the tube and burned the speaker and with it amplifier namely burnt parts IRFZ 44N such symbols were given to the site they made works but when I...

Karol966 · Answer

Apparently a slightly higher voltage from the alternator will damage the transistors in the converter. It looks like it has not been repaired on the website until the end. There is still something damaged in it.
Amplifier damages during heavy use or even without music after starting the engine burns transistors?

TOMIXBOSS · Answer

So what can it be? I just want to buy these parts and do it, maybe you'll help me, I gave him 80 euros and he was on the site for 120 zlotys repair - I want to do it myself

Karol966 · Answer

Start by answering my question. It will tell me whether this is the effect of security measures or the inverter's fault. As for the latter, write immediately on what layout it is built. Tl494 or maybe SG3525, or something similar?

TOMIXBOSS · Answer

The amplifier plays beautifully after connecting the front speakers and tubes cleanly and reliably for an hour I was listening and nothing was even warm enough to ignite the car and go smoke from it burn parts and path when the burned path will not be soldered this amplifier plays but the power amplifiers quietly do not burn only inverter in the inverter are 4 IRFZ44N transistors and one D5KC20R another I can not read but these are diodes

djlj24 · Answer

How are you guided mass? With a car body or a separate battery wire?
I see (although poorly on bad photos - use macro because they are very blurry), that the transducer made as in Magnat or transistors without good protections (it will not choke just blow up transistors).

TOMIXBOSS · Answer

I have a car body and as I said I smoke only after the car is started, what can it be?

zoltan199 · Answer

check the installation voltage in the car before ignition and after

niobass · Answer

I'll refresh a bit.
For me, the same happens in Blaupunkcie MPA500, on IRFZ46N.
The amplifier was just bought, I changed for another one and it was OK until I started the car, it burnt them out.
I exchanged for a new one (checked on the off engine played zaje ... did not heat up) after firing the same story.
The charging voltage is 14V, normally 12.6V

DziadzioMiecio · Answer

First of all, we always connect such amplifiers to the battery of any car body. Conduits with a thick cross-section. Secondly, after repairing, give 14.5vi voltage on such a check these amplifiers if it's ok to the car.

niobass · Answer

with a thick section .. OK, but the first one worked (works well) well (also Blaupunkt). The wine must be somewhere on the inverter side (maybe control) because the power terminals do not smoke.

DziadzioMiecio · Answer

The wine can also lie on the side of the amplifier that has poor power filtration or not at all. This results in the effect of controlling the gates with an interfering signal and the inverter controller does not affect the operation of the keys. After all, I'm just going because I do not have this amplifier in front of my eyes.

niobass · Answer

I overclocked the amplifier, the cause of burning transistors on the ignited motor, there were damaged resistors, instead of 100 they had 30ohm. After exchanging everything OK.

Ireneo · Answer

What is this new theory? Why, then, buying a complete set of car audio we have a short mass.

COUGAR 2000W 4-Channel Amplifier Damaged by IRFZ44 After Car Ignition

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