Alpine 3541 amp

[Devcam]

Hi my amp seems to be getting hot very quickly so i put on a ammeter .its reading is jumping up and down from 800ma to sometimes over 4 amps .any help will be much appreciated thanks

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[orbanp]

Hi Devcam,

Which part is getting hot inside?

I could not find schematics for this amp, just for the Alpine-3550:
https://elektrotanya.com/alpine_3550_schematic.pdf/download.html
I am guessing that it is a similar amp with a different power rating.
You need to verify that!

Assuming it is similar, do check the power supply, from the PS filter cap voltage ratings it must be something like +/-25V - +/-28V.
The PS uses a TL494 type IC, you could debug the PS circuit based on the IC's datasheet.

The amps are "regular" linear audio amps, using ICs and discrete power transistors.
Lots of info out there on how to debug those.

Do verify if your amp matches this "generic scheme".
Let us know if this is the case, and any other questions you might have.

Regards, Peter

[drussell]

Do you mean it gets unexpectedly hot quickly, just at idle, not producing any sound but otherwise still functions correctly, sounds clear and un-distorted, etc. on speakers of the correct impedance?

or...

Does it not work and just sit there getting hot and draw random current even with a muted input, etc?

You need to be a bit more specific for us to be able to really help you. 

[Devcam]

Thanks guys for yols help ive changed all power supply caps and amp works perfect.
Thanks for responding .

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