Hifonics X2200.1D

[caraudioguy2100]

Anyone have a high resolution pic of the audio driver board ?

Someone switched the smd transistors and the amp protects so wondering if they have the transistors in the right locations

 

[streetilegalbass]

Replace U4 ir21844S

 

[caraudioguy2100]

Even with the audio driver board the amp is stuck in protection .

Pin 1 of the 494 is at 6.50 volts .

Any suggestions?

 

[Perry Babin]

The DC offset circuit commonly causes problems like this. Photo of the entire board?

 

[caraudioguy2100]

Here are some pictures of the circuit board

 

[Perry Babin]

I don't see it. Are there any components hidden by the speaker wires?

 

[caraudioguy2100]

Here are pictures of the entire amp.

The amp played audio for a second when first revived then went into protection mode like the guy said it’s been doing I reflowed the solder connections all over the board took out the audio driverboard but it’s still in protection mode .

 

[Perry Babin]

Is there any DC voltage on the output filter inductors?

I still don't see the DC offset protection.

 

[caraudioguy2100]

No the voltage remains at 0

 

[caraudioguy2100]

I reflowed the solder on the entire board and now the amp works as it should .