Hifonics BXI 2010 D

[mike49504]

Wondering if there is a good cross to theese power supply fets The one that are in the amp now are: P75N758

[mike49504]

Sorry the part number is P75NF758

[Perry Babin]

Is the 8 possibly a letter?

The STP75NF75 may be close. Future has them.

[mike49504]

It only appears to be an 8 or an & sign

[Perry Babin]

I can't find anything with an 8 suffix.

[mike49504]

Neither could I . I Ill try the part you listed as a replacement. Do you want me to take a high res pic and post it before i order parts?

[Perry Babin]

If you can take a good quality photo, post it.

Have you tried wiping a bit of heatsink compound on and then off of the transistors to see if it makes it easier to read?

Have you looked at other transistors to see if others were easier to read?

[mike49504]

heres a pic of the fet

[Perry Babin]

I think the one I listed would be close enough.

[mike49504]

Replaced the power supply fets and gate resistors I also checked the drivers all seem to test fine.

But heres my problem 6 out of 12 of the fets the gate signal looks like PIC 1
ANd the other 2 look like the 2nd pic. AMp draws excessive current.

Any ideas on where to start looking?