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#1 |
New Member
Join Date: Jun 2022
City & State: Queensland
My Country: Australia
Line Voltage: 230VAC 50Hz
I'm a: Knowledge Seeker
Posts: 12
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![]() I bought an ultrasonic cleaner from ebay and after a couple of years it blew one of the driver boards fuse and a couple of diodes. I replaced the parts and it worked for a while then died again. Since then I have thrown out the board and just use one. The unit had 2 drivers and the good one drives 1 transducer only. The fried board was driving 2 transducers. The unit works on 1 transducer but is weak in power. I am tempted to connect the 2 transducers that were driven by the dead board. And leave the single disconnected. Not sure if it there is a fault in them and will just kill the driver. As it is I don't use it as it is just too weak. Ohmmeter test showed high resistance on transducers. Any ideas?
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#2 |
Badcaps Veteran
Join Date: Dec 2010
City & State: Alberta
My Country: Canada
Posts: 2,637
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![]() I would check resistance across the electrodes and between each to the metal chassis, to ensure the transducers have not shorted or have a ground fault. You can also measure their capacitance for comparison.
There may be nothing wrong with them and it's the cheap chinese power supply failing. |
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#3 |
New Member
Join Date: Jun 2022
City & State: Queensland
My Country: Australia
Line Voltage: 230VAC 50Hz
I'm a: Knowledge Seeker
Posts: 12
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![]() A bit more research this morning. Looks like the driver that ran 1 transducer is 50 watt. The other driver I think I tossed out was 100 watt. Might just try and find a new 100 watt driver. But I can't remember the frequency. The inductor stickers are long gone.
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#4 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,659
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![]() The 100 watt https://www.alibaba.com/pla/Easy-Ins...yABEgInsvD_BwE
Drive board transducer $25.00 Here is a picture of it https://sc04.alicdn.com/kf/Hfb8b5065...3bbe564f5L.jpg I hope this helps you
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9 PC LCD Monitor 6 LCD Flat Screen TV 30 Desk Top Switching Power Supply 10 Battery Charger Switching Power Supply for Power Tool 6 18v Lithium Battery Power Boards for Tool Battery Packs 1 XBox 360 Switching Power Supply and M Board 25 Servo Drives 220/460 3 Phase 6 De-soldering Station Switching Power Supply 1 Power Supply 1 Dell Mother Board 15 Computer Power Supply 1 HP Printer Supply & Control Board * lighting finished it * These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10% 1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later ) 2 Hem Saw Computer Stack Board All of these had ![]() All of the mosfet that are taken out by bad caps ![]() Last edited by sam_sam_sam; 07-03-2022 at 05:54 AM.. |
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#5 |
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 5,221
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![]() Can you post a pic of the whole unit? Sorry, I am just curious as I have one too. However mine only blew the fuse inside the socket once. Got mine now for like 4 years and still going strong.
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