Router speed control

[GT-Woodman]

Anyone recognise this potentiometer from a router speed control board.

I don’t want to junk the whole router for the want of a replacement.

I the only identifying mark is B254 which I assume means linear 254ohm.

But it totally shot so can’t be measured.

This is the board it bunt also.

 

[MorrisWoodman12]

I've never seen anything like it in the 50 years since starting in the electronics industry. To me it looks like a special especially with that contact built into the back. Does it disassemble any further?
BTW the last digit on resistors and caps is usually the number of zeros such that 254 becomes 250,000 ie. 250KOhm which seems much more likely.
Sorry I can't be of more help.
Martin

 

[Myfordman]

I would try and get a replacement module or if that is not available, bypass the controller and use the machine at full speed only.

 

[MikeJhn]

Lots of different plug in external speed controllers available.

 

[dizjasta]

Possible Fix?

 

[GT-Woodman]

I've never seen anything like it in the 50 years since starting in the electronics industry. To me it looks like a special especially with that contact built into the back. Does it disassemble any further?
BTW the last digit on resistors and caps is usually the number of zeros such that 254 becomes 250,000 ie. 250KOhm which seems much more likely.
Sorry I can't be of more help.
Martin

 

[GT-Woodman]

View attachment 185588View attachment 185590View attachment 185589View attachment 185588Anyone recognise this potentiometer from a router speed control board.

I don’t want to junk the whole router for the want of a replacement.

I the only identifying mark is B254 which I assume means linear 254ohm.

But it totally shot so can’t be measured.

This is the board it bunt also.

Lots of different plug in external speed controllers available.

Looks like I’ll go with an external one.

 

[GT-Woodman]

Possible Fix?View attachment 185594

This looks like a winner

 

[Phil Pascoe]

You may well be at the limit of that one's output.

 

[Sideways]

My tip would be to get a better router with a tacho on the spindle so that it holds speed under load. Far nicer to use.

 

[ChaiLatte]

What does the other side of the board look like?

The font on the wheel looks standard Katsu/Fakita style. New board here:

https://www.aimtools.co.uk/products/sp10174806

 

[Spectric]

why has no one asked what make and model of router ? It looks to be quiet ancient as most are now encapsulated.

 

[GT-Woodman]

What does the other side of the board look like?

The font on the wheel looks standard Katsu/Fakita style. New board here:

https://www.aimtools.co.uk/products/sp10174806

The pot has a bypass connection that simply shorts the board on max speed

 

[MorrisWoodman12]

my first thought is that that is a 'simple' phase angle controller. Is it possible to remove the circlip shown in your third picture showing the underside of the pot? It may be a standard readily available pot underneath. Be careful not to lose the clip though.