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I need to see the schematic of the model WW38GD scale in order to re-solder a wire

Posted by Gordon Smith on


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Mark Compton

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SOURCE: I need a schematic, or

Posted on Apr 22, 2011


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The battery wire has come out of the little connection thing on the top of the battery and I can't get it back in

Terminal is broke you can either solder it or get a new part at a Radio shack ( if open) Auto parts has them too

Schematic wiring diagram

Buy a Hayes Book or Chiltons for your model. Schematic drawings are in it. Hayes runs around $25 can be found or ordered at most local auto parts stores. I always buy one every time I purchase a new (to me) vehicle , sooner or later I've had to use it. Good Luck !

I need the schematics for a Marshall MG-10KK guitar amplifier in order to repair it! I'm a good technician but I don't speak english very well... rsrs Thanks!

Most of the problems with the small guitar amps are blown power amp chips. They usually use chips like the TDA2030 which look like a power transistor.
Most other problems involve broken connectors, bad solder joints or cracked circuit boards. The power supply area is so simple one doesn't need a schematic for that part which is usually just three terminal regulators for +/-15 volts. Schematics are often hard to find.
Try this site, although this is a different model, much of the schematic will likely be the same.

Battery wire became loose from from the circuit board

Hello Cachegirl_68,

Your scale came with a 5 year guarantee...
(possible... ??).


Re-soldering is actually pretty easy thing to do...
If you have a circuit pack holder.. or three hands
(but it is important not to overheat anything)...

Bright light, magnifying eye-wear, electronic
gage (rosin core) solder, low wattage soldering
iron, solder sucker or wick

If you already have the equipment available...
well ventilated ... non-combustible (or melting)
flooring, chairs and work-surfaces...

A single burn hole in your favorite jeans, carpet,
vinyl floor or chair will render the COSTs as
completely impractical...
(not to mention the BURN under the jeans hole)

Your local friendly electronics store has these
TOOLs... New (
also that light gage solder)...

Watch your costs... (
A NEW HOMEDICS might be cheaper.

If you have EVER soldered... you know what solder looks like when it becomes molten (shiny)... At that moment you can take a
WOOD toothpick (not the PRECISE TOOL but adequate) and push the old wire from the soldering hole... MAKING the hole
ready to receive the new wire...

It is important not to OVERHEAT

HoMedics ProgressTracker SC 372 Instruction Manual Page 3

Me... (I soldered for a living)...
I would buy a NEW scale...

And a bottle of wine... Life is short.

(and the Salvation Army is looking for that scale of yours)

Carnac the Magnificent

AV-27BM5 relays click on but no picture,high voltage or sound

It's been my experience that symptoms that point to the power supply, generally are not the case. Schematics now days are tough to find unless you are an authorized servicer for that brand. There are a couple of generic dealers out there but they don't carry everything. Before you replace the power supply I would suggest you go though other boards first looking for bad solder connections and/or transistors and IC's that may be defective. A good DVM with an ohm's scale should suffice. If you still can't find anything, I would suggest taking it to a reputable repair person.

Scale does not work anymore. Batteries are still good

and same again. batteries are fine but i get an error message

pete scarborough qld
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