Rockford fosgate punch 45 mosfet

[chipper]

Hey guys I have a punch 45 doesn't power up just makes a slight clicking sound when B+ & ground, remote are applied. LED is dim and pulses to the clicking sound. But if I short drain & source leg on MTP3055A amp will turn on and play but it skips. What do I check?

 

[Perry Babin]

were all of the missing components in place when it acted as you described?

 

[chipper]

No it had both D44VH4 in place and both outputs I had removed them to check for any shorts. It wouldn't power up with all components installed still no power

 

[Perry Babin]

Remove all output transistors and remove all solder, confirming with a meter that there are no shorts between pads.

Reinstall all power supply components.

Does the amp produce rail voltage?

 

[chipper]

I removed all 4 reinstalled everything except one D44 amp will now turn on with remote applied. Brown/yellow channel produces distorted audio. Orange/black has clear audio.

 

[chipper]

Also can I use D44VH10 as a replacement? Or 2N6488? Thanks perry!

 

[Perry Babin]

D44vh10 is what I'd use. The 6488 will run really hot.

 

[chipper]

If I have one power supply transistor installed will that affect the output? Audio is still distorted from both channels.

 

[Perry Babin]

I have never tried operating the power supply with only one transistor so I cannot tell you what to expect.