repair t20001bd rockford

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You are making too much assumptions too quickly. How do you know that only a single MOSFET is blown, and how do you know which one is blown?. When one MOSFET fails it usually becomes shorted and causes maybe a dozen parts to blow.

Also, TO-274 is not the name of any known popular package, do you mean TO-247? What is the part number or whatever is written in the transistor case? Does it contain any logo? (also useful to identify manufacturer).
 
yes the package is 247...😉
the component is damaged...

there are 4 mosfet..
two are NPN and two are PNP (i believe...🙂).
one of these MOS is damaged....

the only logo that i can see on it is a great F. its impossible read other informations becouse the component is damaged
i can read the other similar mos.
i not believe thet F is firechild becouse i have already researched the component in the web site....

can you tell me where i can buy it?

thanks and excuse me for my english.
it s not perfect.
 
rockford says that is not possible buy spare parts.... is it possible?
tomorrow i ll read the number of Mos in another amplifier t20001.

PS.

my amplifier now is working but i want change the damaged component before is too late....
for this reason i'm sure that the component is the only damaged on the mainboard..

with the tester i have measured it and the other similar on the mainboard.
the two mos are equal. the other two Mos have different values
 
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