kicker kx 1200.1 problem

[Perry Babin]

D61 and 63 are in TO-220 packages but you can have many different types of components in a TO-220 package. In this instance, they are rectifiers.

Post the voltage on the 494. Copy and past the following and fill in the blanks.

Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:

 

[flycrazy]

ok will do so witch ground do i use the amp ground in and do i need q10 and q16 fixed first and do i power up amp or no

 

[Perry Babin]

You don't have to check the 1st leg of the two transistors. If they were in the circuit, it may have indicated whether they survived or not.

 

[flycrazy]

you have me lost can u email me your number if thats cool and i can give u a call that will be easyer i have everything in front of me my email is flycrazy1981@gmail.com

 

[Perry Babin]

Q10 and Q16 are the transistors. Forget about those for now.

For now, post the voltage on the TL494.

 

[flycrazy]

ok but where do put ground from multi meter on amp main ground ? and do i test in dioid mode

 

[Perry Babin]

Black probe on amp's ground terminal. DC voltage setting on meter.

 

[flycrazy]

idk if this is right but multi meter on dc volts ground on amp main ground and when i touch all pins i get 0 volts

 

[Perry Babin]

The amp has to be powered up.

 

[flycrazy]

so i can power the amp out of the case no heat sinks no q10/q16 and no irf3205 and i power it just like if it was in a car?

 

[Perry Babin]

Yes. With the 3205s out of the circuit, there isn't much that can go wrong. I'd recommend inserting a 10-15 amp fuse in the B+ line. The low-rated fuse in the B+ line is good practice when doing any low power testing.

 

[flycrazy]

ok i will go do that now and post back in 15 mins u have facebook it something we can chat on

 

[Perry Babin]

No.

 

[flycrazy]

pin 1 0.003
pin 2 04.94
pin 3 0.065
pin 4 0.065
pin 5 1.436
pin 6 3.681
pin 7 0.003
pin 8 11.56
pin 9 04.35
pin 10 04.48
pin 11 11.55
pin 12 11.57
pin 13 04.94
pin 14 04.94
pin 15 04.94
pin 16 0.003

 

[flycrazy]

and amp has green light on now to not red

 

[Perry Babin]

The IC looks OK.

Much of the protection circuit requires the power supply to be working to be triggered.

Have you checked the output transistors?

 

[flycrazy]

whats the number on them ?

 

[Perry Babin]

They are marked IRF640 and IRF9640.

 

[flycrazy]

ok found them ok so how do i test them?
and with power or no pawer?

 

[Perry Babin]

Did you read the basic amp repair page?