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This is part of another thread, but I feel could be tread of its own. hoping to get fast help, feel free to link to me things to read.
quick background about components:
I got a bad AVR with a bad front left channel, thats where this items are coming from.
Gear I have:
I have a uni-t ut61 DMM, I have random electrical components from spark fun inventor kit, old PSU can turn in to bench top psu.
I need help checking the components. He is what the circuit is made of and what I think I know:
Resistors :
Look for visual burned marks or cracks.
check to make sure it matches marking and the schematic using dmm
How much ohms do I over look due to % rating of resistor. What about the ohms of my DMM and test leads. I
know this stuff will mess with readings.
This have to be out the circuit to test right?
Noble resistor
Aka fire proof? Aka emitter resistor? Aka sandstone resistor?
What is its name, its big, white has two resistors in one, they share the middle leg.
How do I check it visual, what about with my gear?
Capacitors:
Look for blown apart, leaking, or visual damage.
Can this be test in circuit?
Is there a way to test this with equipment I got? If not is there some cheap knockoff from ebay I can buy to test them?
Transistors:
Visual damge what am I looking for?
I know to test for shorts between legs.
How do I test this in with dmm in diode mode? How does this work?
Any other way to test if these test or not the best? I think there is something about apply voltage to a leg and see if it switches??
Diodes :
Visual damage what am I looking for?
My dmm has a test mode, I look to make sure this thing is a one way road right?
Does it have to be out of circuit or can it be in circuit?
Any other info?
There is a variable resistor (rheostat) I think.
I think its used to set something to the right number so that all speakers are in synchronous or sound the same or have same volume. (aka vary a resistance for a specific reason )
I know it need set after you change components. Would I need to set this if I use the exact same components to fix the channel aka rob them from back surrounds?
How do I check this part for damage what do I look for with tools and visually?
Thanks for reading, for your time, and hopefully your help.
quick background about components:
I got a bad AVR with a bad front left channel, thats where this items are coming from.
Gear I have:
I have a uni-t ut61 DMM, I have random electrical components from spark fun inventor kit, old PSU can turn in to bench top psu.
I need help checking the components. He is what the circuit is made of and what I think I know:
Resistors :
Look for visual burned marks or cracks.
check to make sure it matches marking and the schematic using dmm
How much ohms do I over look due to % rating of resistor. What about the ohms of my DMM and test leads. I
know this stuff will mess with readings.
This have to be out the circuit to test right?
Noble resistor
Aka fire proof? Aka emitter resistor? Aka sandstone resistor?
What is its name, its big, white has two resistors in one, they share the middle leg.
How do I check it visual, what about with my gear?
Capacitors:
Look for blown apart, leaking, or visual damage.
Can this be test in circuit?
Is there a way to test this with equipment I got? If not is there some cheap knockoff from ebay I can buy to test them?
Transistors:
Visual damge what am I looking for?
I know to test for shorts between legs.
How do I test this in with dmm in diode mode? How does this work?
Any other way to test if these test or not the best? I think there is something about apply voltage to a leg and see if it switches??
Diodes :
Visual damage what am I looking for?
My dmm has a test mode, I look to make sure this thing is a one way road right?
Does it have to be out of circuit or can it be in circuit?
Any other info?
There is a variable resistor (rheostat) I think.
I think its used to set something to the right number so that all speakers are in synchronous or sound the same or have same volume. (aka vary a resistance for a specific reason )
I know it need set after you change components. Would I need to set this if I use the exact same components to fix the channel aka rob them from back surrounds?
How do I check this part for damage what do I look for with tools and visually?
Thanks for reading, for your time, and hopefully your help.