clemz
off to a rocking start
Member since January 2024
Posts: 2
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Post by clemz on Jan 6, 2024 14:17:24 GMT -5
Hi there- I bought a used Diamond Pacific mini-sonic MT-4 and ran it several weeks with no problems. Today it just… stopped. Nothing whatsoever happens when I turn the knob on and off.
I know these things are supposed to be very sturdy and I’m hopeful that it can be fixed, but I’m not a mechanically-inclined person (lol!) and I have no idea where to start. And there is hardly any information out there about this machine. I’m going to email Diamond Pacific but wanted to ask you knowledgeable folks for any insight or tips. TIA!
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stefan
Cave Dweller 
Member since January 2005
Posts: 14,113
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Post by stefan on Jan 6, 2024 16:40:59 GMT -5
Check the obvious. Power to the plug, power cord going to the transformer still wired up. All wires connected to something, all nuts and bolts tight (and present). Not really a lot that can go wrong with these machines. Double check that the metal springs are attached as well.
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Post by chris1956 on Jan 6, 2024 22:00:02 GMT -5
There is a diagram in the owners manual. Lots of nuts so I would check all of those along with the electrical connections.
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clemz
off to a rocking start
Member since January 2024
Posts: 2
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Post by clemz on Jan 8, 2024 11:14:18 GMT -5
Thanks for the advice, all. It’s much appreciated. I’ll look into the things you suggested and keep you posted.
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Tommy
Administrator 
Member since January 2013
Posts: 12,987
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Post by Tommy on Jan 8, 2024 11:54:26 GMT -5
Thanks for the advice, all. It’s much appreciated. I’ll look into the things you suggested and keep you posted. The others pretty much said this already but if the device is plugged into a power strip with surge protector check if the button (breaker) on the strip is tripped. Easy enough to test, just press the reset button on the strip or plug a lamp or something else into the strip and see if there is power present. |
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mjflinty
spending too much on rocks
Member since September 2011
Posts: 358
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Post by mjflinty on Jan 11, 2024 10:44:27 GMT -5
I have a old MT-4 that just quit one day too. It has sat on the shelf for years. I just never got around to troubleshooting it. Some good advice here. I'll have to take it apart and document the whole way and see if it is something as simple as a loose connection.
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stefan
Cave Dweller
Member since January 2005
Posts: 14,113
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Post by stefan on Jan 12, 2024 18:24:19 GMT -5
Just a thought on these as well. The speed dial is a simple potentiometer and can be replaced for very cheap. They are pretty simple to change out if you can do basic soldering (a soldering iron is like $20). If you search Amazon you will find all kinds of options.
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