Potentiometer Help

[Hammerhead]

Joined: Fri Dec 16, 2011 12:08 pm
Posts: 268
Location: Melbourne, ON Delete postReport this postEdit postReply with quote

I need to replace this pot, but I'm having a hard time identifying it. I'm pretty sure its 200 ohms.

It looks like the numbers are "363 2208" or "363 220B". Anyone have any ideas?

 

[brad808]

Can you just remove it from the board and use an ohm meter to read the range?

Sent from my Nexus 4 using Tapatalk

 

[Hammerhead]

I know the range (200 ohms) but the parts store is asking me what wattage I need.

 

[Menace]

The wattage will be minimal with that pot, like 1/4 to max 1/2 Watt. And based on those numbers it could be a 36K or a 22 Ohm, not sure where you're getting the 200 Ohm from?

D

 

[Allan]

What is it in? What trouble are you having with it? before you attack the pot check it with an ohmeter,unless it is burnt out which it does not look like the two ends should measure the resistance the wiper in the middle is usually where your trouble is.

 

[Hammerhead]

This is my Gyruss board - it has two volume pots, one for left channel and one for right channel
- they are both supposed to be 200 ohms, but one has been replaced with a 2000 ohm pot
- the 2000 ohm pot just spins i.e. there is no upper or lower stop
- there is currently no sound - the previous owner said that when he used the game last the sound was very loud, so he went to adjust the volume and lost the sound altogether

 

[Menace]

Sounds like the wiper arm in that pot has failed, which isn't uncommon. If you're certain it needs a 200 ohm (or thereabouts) pot, just find any that fits and you're off to the races. (if it's for an audio circuit it technically should be a pot with an "audio taper" which is what the 'B' in your first post would represent, but a standard "log" pot will work just fine in your application)

D

 

[Allan]

200 seems low for audio I'd measure it,actually measure the good one as well most audio pots on those old boards were closer to 20k although the value is not too critical once you change it just set it by ear.

 

[Hammerhead]

The schematics I have say they are both supposed to be 200 ohm.