APM4546 replacement for LG L1953-PM

[UsamaFoad]

I have a LCD L1953-PM that died on me. I opened it up and I found a bad capacitor in the power board. I also found that there was a short circuit between 12V and GND, So I disassembled the components one-by-one to see where the short circuit was. The components I disassembled were: (C201, C202, C203, C204, C205, C206, C207, R202, R109, R111, D201, T101, ZD101, U303).

Finally I found that the short circuit was in U303 = APM4546 (Dual Enhancement Mode MOSFET, N-and P-Channel). I searched for it in the local supplier and didn't find it.

So my question is, are there any substitutes in the IRF, cause when I searched I couldn't find any 30V 8A dual mosfet, only 30V with lower ampere? so my next question is, is it possible to put two mosfet one N channel and another P channel instead of dual channel mosfet?
I greatly appreciate your help! thanks!

Also should I test anything else before proceeding with changing the mosfet, thanks again!

[Teeva]

Re: APM4546 replacement for LG L1953-PM

I think this one FDS8958A is close enough to APM4546K according to the specs.

[UsamaFoad]

Re: APM4546 replacement for LG L1953-PM

I think this one FDS8958A is close enough to APM4546K according to the specs.

Thank you for reply.

But I think this one not available in my region too! Here are some MOSFETs available in my local store.

I think the best option available for me is two separated MOSFET, if this option is possible.

[momaka]

Re: APM4546 replacement for LG L1953-PM

so my next question is, is it possible to put two mosfet one N channel and another P channel instead of dual channel mosfet?

Yes, that should work fine. Just make sure you do all of the G, D, and S connections right .

It may also be a good idea to make sure your new MOSFETs are heatsinked properly. That DIP-8 APM4546 relies on its leads and the copper board traces to cool off.