Whats wrong with my phaser??

[wescattle]

I was given an old phaser a while ago, prob mid 80s and it worked well for awhile, but now its really shot. It works occasionally, but always has a period of time when it just doesent work, ive tried changing batteries, and opened up the chassis and everything looks solidered on well. So what could it be?

Thanks for the help

 

[wescattle]

i just tried some stuff, the light works, it clicks on, and it soundes like is ever so slightly phasing, but the knob doesent change anything. IT just isnt phasing, what could cause this problem?

 

[dbx]

What phaser is it? There might be a trimmer inside to adjust the depth...got a pic?

 

[GoGoGuitars]

What about an AC option? Does it have one and if so, have you tried it with a power supply?

 

[wescattle]

oh sorry its an MXR phase 90 and i just realized that the brown 'dot' under the knob is snapped off in half, would this effect anything?