Resistor Question

[caraudioguy2100]

This resistor appears to be brown,red,red,gold 1.2k ohm

Im posting this pic to get a 2nd opinion on the colors since the resistor measures 112 ohms wondering if I’m going color blind

 

[JonSnell Electronic]

Just to confirm the reading;
Brown, Red, Red and a Gold band is 1k2.

 

[caraudioguy2100]

That’s what I thought so this resistor is way out of tolerance measuring 112 ohms

 

[Perry Babin]

It's odd for a resistor to drop in value, especially that far.

How was it being used? Are there others in the amp dong the same duty?

 

[JonSnell Electronic]

I would check your meter with a known good 1k2 resistor as resistors of that type do not normally go low value.

 

[caraudioguy2100]

1 side of the resistor connects to the ground terminal of the amp then the other side goes to a 10 ohm resistor and through a Mylar cap and to the emitter of the outputs .

I checked the resistor again and it measures 112 ohms

I checked a 1.2k resistor with the same meter and it measures fine .

There are no other resistors in the amp just 1

 

[Perry Babin]

Photo of the board, make model?

It sounds like it may be part of a Zobel network.

 

[caraudioguy2100]

It’s an old soundstream tarantula amp .

Here are some pics of how the resistor is connected .

I put the 1.2k ohm resistor in the amp but wanna make sure I have the correct value before I power it up since the other resistor measures way out of tolorance

 

[Perry Babin]

What's the circuit board designation, R122?

 

[caraudioguy2100]

Yes R122

 

[Perry Babin]

Look at the last page, far-right. Is this basically the circuit you have?

 

[caraudioguy2100]

Yes

 

[caraudioguy2100]

Do you think the resistor got hot and dis colored the bands ?

 

[Perry Babin]

That's possible. The diagram I sent was all of the information I have on this (similar) amp. A 110 ohm 5% resistor would be within tolerance at 112 ohms.