memphis 1500d

[timwebb]

ok im workin on the driver card for this amp can somone identify this part

A1381E

 

[Perry Babin]

http://datasheet.octopart.com/2SA1381ESTU-Fairchild-datasheet-5361519.pdf

Possibly ^?

 

[timwebb]

ok the protect light and the green light come on at the same time

 

[mike49504]

The driver board i have here out of a memphis 1500d has a A1301-e in it

 

[timwebb]

that would make both lights com on?

 

[Perry Babin]

Does the amp work properly?

If not, what are the symptoms?

 

[timwebb]

the power supply works fine it was a one output transistor over heating and i changed some transistors on a driver card cause the legs were rusted and the transistor stop over heating but i cant get this light to come off.i was going to see if it plays.everthing gets power and idle good.

 

[Perry Babin]

Does the speaker protection relay engage and remain engaged?

What is the DC voltage on the speaker terminals?

Measure the DC with the black probe on the ground terminal and also with the probes directly across the speaker terminals.

 

[timwebb]

the relay stays engage until it turns off but when i put the 9640's back in the green light starts blinking fast again should i rebuild both driver cards?

 

[Perry Babin]

In my opinion, you shouldn't replace any parts without having a good reason.

DC voltage readings?

 

[timwebb]

it reads 0.4 dc on the speaker terminals and the light pules with all the output transistors back in

 

[Perry Babin]

Remove the two driver boards that have the white heatsink compound on them and measure the DC voltage on the tabs of the output transistors.