Hi can anybody help

[Ian12300]

Hi I am trying to fix my Mig there is two resistors I would like to replace with 1 if possible can anybody help

 

[Pommie]

Does that say 100R on them and are they in parallel ? If so you need a 50ohm 20W resistor.

Mike.

 

[Ian12300]

rx21-8w 100rj and they are side by side

 

[unclejed613]

rx21-8w 100rj and they are side by side

so, that's 50 ohms and 16 watts, closest match will be 51 ohms 20 watts... it will most likely be a ceramic resistor of similar style to the one next it, but bigger.

 

[Diver300]

I suggest a wirewound resistor, which you can mount on a convenient bit of metal nearby.

Something like this:- https://au.element14.com/arcol/hs50-50r-j/resistor-wirewound-50-ohm-5-axial/dp/2478208

That would be generously rated, but it's not a lot of money for a one-off, and it will be running much cooler than the ones that failed.

 

[Ian12300]

Thank you very much for your help I will try the suggested thank you

 

[andypandyplod]

I suggest a wirewound resistor, which you can mount on a convenient bit of metal nearby.

Something like this:- https://au.element14.com/arcol/hs50-50r-j/resistor-wirewound-50-ohm-5-axial/dp/2478208

That would be generously rated, but it's not a lot of money for a one-off, and it will be running much cooler than the ones that failed.

The two resistors are already wirewound.

 

[gophert]

A 25W aluminum resistor placed off-PCB on the housing as a heat sink might be a good idea to save the rest of the board.

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