Kenwood KAC-Q74 4channel amp

[KA-T_240]

in my electronics class me and nuckinfuts are working on trying to fix a KAC-Q74 amp and are wondering if anyone knows where to find a diagram and info on specs on compents in the amp.

[Guest]

the specs arent gonna help you fix the amp....but i could.

[KA-T_240]

i wondering about some thing that would list the resistance across certain resisters stuff like that

it well power up but sends nothing to speakers we are going to do a alot of testing tomarow in class

[slowvo]

well resisters are color coded for resistance

but good luck finding any good diagrams....haha

[Guest]

replace the mofsets

[KA-T_240]

that is what we and the teacher were thinking, ill post up what you come up with after class

[Guest]

well you can easily see if they are melted...just take them off if they are melted a little you need to replace the ones that are melted....other than that....the speaker terminal outputs could be messed up somehow....but its probably the mofsets.

[Guest]

Or it could be the powersupply, or a something in the signal path as well. What's it doing/not doing?

[Jim]

Your not going to find a diagram for the amp.

Check to see if the capacitors are bubbled at the top (make sure they are discharged), and yeah as garberg said, resistors are color coded (you guys should know this by now, or you shouldn't even be attempting to open the amp up), check the powersupply as chuck said;

Look at the soldier connections from all the various connectors, make sure they are all good....

[KA-T_240]

today we did a pretty good amount of testing. the complete board looks good and stuff. you power in. the grounds are also emiting 13.67v so somehow the grounds are getting voltage. the power pretty much disapears somewhere between the input and the transformer or what ever it is called. kinsella is helping us with this in electronics class at MHS

[24valvenotak]

LMFAO. tony kinsella. "OOH BOY."

Ask him about is neumonic device from the military for remembering resistor color codes. B B R O Y G B V G W

best teacher ever.

[KA-T_240]

he is awsome, but no oooh boy its something else dont remember

[24valvenotak]

there are a ton.. some of the kids in my class made t-shirts with the top ten on the back

[KA-T_240]

i remember seeing those shirts

[nuckinfuts]

yea 97jeep and i fixed the amp earlier this week all that it was was a faulty ground all we had to do to fix it was to resodder the ground connection and it works fine now even bumped up my system a little yesterday in class i dont think the teacher next door was too happy tho

[KA-T_240]

hehehe, everybody starts to hate shits (senoir high industrail technology staff) or at least that is what the computer tech refer to them as