100ohm resistor is very hot

[tbone321]

Then it looks like you have the answer to your problem which is to replace the resistor.  This is a common resistor value and should be available at Radio Shack.

[salongaopm]

ok...thanks!

[Dennis Cherry]

Looking at your picture it sure looked like an 18 Ohm resistor according to the bands. But the way some mark their devices it could mean anything.

You have a brown and gray bands which should be 18 ohms, the one you need should have brown, black, brown. or marked with 100 or 101.

[salongaopm]

can i use this?

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found it at frys

[zwiller]

I vote yes but would want a confirmation from another member.  You are not allowed to view links. Register or Login

Another idea is to shoot rainlover (coop mgr) a PM and see if he has an extra leftover and he could mail you one... 

[Dennis Cherry]

The spacing between the bent leads will be 1 inch on that resistor. Body length is .88 inches

What is the spacing on the holes on the PCB?

[tbone321]

Sure, you can use that one if you want to. That is a ceramic resistor and since they can deal well with heat, it may get hot but should work just fine.

[salongaopm]

it is the ony one I can find in the stores near me. If there is no bad  effect to the board/controller, I will use it then. Thanks!

[Dennis Cherry]

it is the ony one I can find in the stores near me. If there is no bad  effect to the board/controller, I will use it then. Thanks!

I recommend mounting the resistor at least 1/4" above the PCB to help dissipate heat better and not burn the board.

[JerryPlak]

I am using these Ceramic Cement Resistor 100 Ohm 5W 

[salongaopm]

I mounted the resistor closer to the edge of the board and away from the nearest part. It seems to be working fine and not as hot as the previous part.