"Touble shooting"Volume pot question

[jerry47]

My volume pot gives a good reading of .564 But once I turn it up past 7 I loose all sound ,Turn it back down everything works as it should?? Any help would be greatly appreciated, Thank in advance.

 

[martin H]

My volume pot gives a good reading of 564 But once I turn it up past 7 I loose all sound ,Turn it back down everything works as it should?? Any help would be greatly appreciated, Thank in advance.

I assume you're reading 564K between the the tag one and three of the pot. This tells you that the track inside is intact, bu doesn't tell you if the middle contact (the wiper) is staying in contact with the track all through it's rotation.

To check this, put your meter on between on end of the pot and the center tag, and rotate the pot slowly. You should see about 0 ohms at one end of the rotation, and gradually increase to around 560K at the other.

if at any time in the rotation the connection disappears, i.e., goes open circuit, the pot is bad, and needs to be replaced.

 

[Baylin]

Does it go completely dead or do you get crackles/intermittent/empty reduced sound?

If so could just need cleaning with deoxit5. If it's truly dead then it needs replacing.

 

[jerry47]

I assume you're reading 564K between the the tag one and three of the pot. This tells you that the track inside is intact, bu doesn't tell you if the middle contact (the wiper) is staying in contact with the track all through it's rotation.

To check this, put your meter on between on end of the pot and the center tag, and rotate the pot slowly. You should see about 0 ohms at one end of the rotation, and gradually increase to around 560K at the other.

if at any time in the rotation the connection disappears, i.e., goes open circuit, the pot is bad, and needs to be replaced.

1st Answer /Will check right now, As for the 2nd question goes completely dead you hear nothing. Thanks

 

[jerry47]

I assume you're reading 564K between the the tag one and three of the pot. This tells you that the track inside is intact, bu doesn't tell you if the middle contact (the wiper) is staying in contact with the track all through it's rotation.

To check this, put your meter on between on end of the pot and the center tag, and rotate the pot slowly. You should see about 0 ohms at one end of the rotation, and gradually increase to around 560K at the other.

if at any time in the rotation the connection disappears, i.e., goes open circuit, the pot is bad, and needs to be replaced.

I would like to thank you for that bit of info, You nailed, I'll keep this for future reference's Thanks again

 

[jonas335]

I had this same problem twice, both times I re-did all the solder joints and fixed the problem. It seemed to be the ground connections, make sure the third tab is securely grounded to the pot...

 

[emoney]

There's an old country saying...."It's a potentionometer......change it"