MMATS DHC1400.1 Rebuild

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Greetings I’ve gotten this mmats amp to repair but concerning the parts I want to order them but I need to know the parts that will work and make the amp efficient.
The owner says it was given to previous tech persons and they concluded that it needs the HIP4080AIP driver chip, I would be replacing that anyways. There are switching on the power supply but for some reason I want to use parts from one batch and compatible specs there are currently IRF3710 in the power supply is that compatible?
The output fets are mixed with IRF640N and 94-2355 I’m not sure if the 94s are originally installed but the 640 was added obviously.
The amp is currently not producing audio I want to rebuild it, what are the part name for the power supply and output fets.
 

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Good day Mr. Perry, based on my geological location my only option (ruling out China) is DigiKey, the IRF3710Z with the TO220 packages are out of stock and mostly obsolete, im asking if the IRF3710Z with the TO262 package (digikey #IRF3710ZLPBF-ND) can be substituted as the formation of the amp doesnt use the tab for mount (screw & spacer) as the are just bending under the bottom for a circuit board pressure clamping method.
They both are 160watts but technically one is of 6mm of metal missing from the tab of the component wich is mathematically 48mm over the 8 component surface to dispense the heat.
let me know what you think about the TO262 packages.
 
Most of those options are for US signed up Paypal. ive been thru that with them already. The Arrow company allows payment from non-resident Paypal and also have a guest check out mode, so i can buy from them.
some of the vendors you sent thru the Octopart have asian relations, are there any credibility in buying parts from those merchants?
 
The nearest result ive gotten Mr Babin is one chinese merchant has 94-2355 and has IRF3710 in brackets next to it.
Is it best to just use the IRF3710Z for the outputs, the previous tech has 5pcs 94-2355 and 3pcs IRF640N to complete the 8 outputs but when i recieve it, it still wasnt playing just humming and the power section is made up from IRF3710 (non Z).
Your previous suggestion was use 3205's in the power and 3710Z's for the output.
 
The parts are here!!!
I have the HIP4080 and the IRF3710Z and want to continue with the repair of this amp.
My question is why are IRF3710 (non Z) in the PS section?
Is there any test now to do before i install the outputs to be on the safe side?
should i uninstall the 4080 and send the pad voltages before i insert the new one?
 

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You can test the drive without the outputs.

You will likely have to bridge the inverting input and output terminals of the feedback op-amp and will have to ground the source leg of the high-side FETs. Connecting a load across the speaker terminals may be sufficient for the latter.

what would be the "feedback op amp" location or part number in the amp?
 

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