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Replacement for defect parts for a proxxon drill

On motor control of my proxxon mircromot 40/E the thyristor becomes defect. Motor control number is: 285103, thyristor is labeled with T F8B. Which type of thyristor can be used for replacement? Furthermore, the varistor between motor power supply contacts becomes defect. It is labeled with LO4Z M55. Which type of varistor can be used for replacement? Many thanks for any help.

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Refer this problem directly to Proxxon for resolution.

Posted on Mar 23, 2014


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Maytag washer repair

The washing machine timer can be considered the brain that controls the washing machine's systems. Although timers are ruggedly constructed, they contain a variety of tiny parts, like springs and movable contacts, that can develop problems that keep the machine from operating properly. The movable contacts can become burned and fuse together or they can become stuck in the open position, thus disrupting the wash cycles. The timer's motor can also become defective, thus preventing the timer from advancing through its cycles.

a defective timer motor, the motor's control contacts stuck in the open position or defective drive gears. Unplug the timer's wiring harness, then, with the timer set to any position other than off, check for continuity through the motor contacts. Continuity will be indicated by a "0.000" on the meter's display. A pictorial diagram on the back of the machine will tell you which numbers on the timer socket corresponds to which set of contacts in the timer. Likewise, a functional timer motor will display a resistance reading greater than 0.000, but less than 5 ohms. Open contacts or a defective motor winding will be indicated by an "O.L." on the meter's display.
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I have a dewalt DW505 electric hammer drill that makes noise when in use, forward and reverse. It sounds like one or more worn out gears. Could this be caused by some other defective part or am I on the...

Make sure it's UNPLUGGED! (RALOL)

Seriously though, go to this website,
they have an exploded view of your drill that you can download; it's in a pdf format; the parts are numbered so you can easily identify them. They even have the manufacturer's part number listed in case you need to order a replacement part.

The illustration will also come in handy once you take the drill apart and you have to put it back together; especially if you have to walk away from the project for several days- waiting for the replacement part(s).

I would suggest having a large- private work space to take the drill motor apart on; where you can neatly separate the pieces and cover them, should the need arise to leave them as is, in a disassembled state; free from the kids or wife (not on the dining room table where you know someone will tamper and move things around- saves on arguments, too!

Best wishes on your project- be well.

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Hi dboppre,

Welcome to fixya!

I can't find brushes for it anywhere, however, you can get a replacement motor at this website:

Copy and paste this entire address into your browser and the motor assembly page will open for you. Should you need any other parts for it use this address:

Good luck.
When you accept this solution, please place a vote.
Handie Andie

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