Crawford Etcher - Blown Fuses

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He already changed the Transformer with a new one.


dang? this one has got me! Im no EE but I've been an electronics Tech for 20 years and every thing looks to be in working order. If I had it here Id put it on the bench and test the crap out of it. I will research this further and get back with you.. good luck
 
Do you have access to another one of these build outs? A real easy way to trouble shoot something like this is with a second one. Just swap out one thing at a time until the culprit is found. Sometimes, just because you've replaced something, doesn't mean it has been eliminated as the culprit. I've had, more than once, defective replacement parts trick me up. Good luck.
 
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Well folks... I replaced the 1-amp fuse with a 1.5-amp fuse and everything is holding.:thumbup: I work in the power industry... I'm actually am an EE (now a PE)... so I am ashamed at how much trouble I was having with this thing. From working with with distribution voltage transformers, I know that the transformer impedance rating has a lot to do with the current it can draw under certain conditions.

I'm going to go ahead and reconnect the 12-volt side now, and hopefully produce a test etch with my new stencils. We'll see what happens.

Erin
 
Hey Guys, I may be a little late on this topic, but maybe this will help someone in the future.

I don't really know that much about electronics, but I've received a good many emails from people having trouble with their etchers.

One of the most common problems is the way the on-off-on switch is wired up. It's confusing because the numbers on the pins do not go in a logical order.

If you are still having trouble with it, check that again.

Hope this helps. -chris
 
All,

Has anyone else had problems with the 1amp slo-blo fuse being too small?

If so, I'd like to know.

I hesitate to revise the wiring schematic on my site at(www.knives.mlogiudice.com), because a 25.2V, 2A transformer shouldn't draw much more than 1/2 amp from the 120V power supply. The 1 amp slo-blo fuse should provide plenty of current for this etcher.

Thanks,

Mike LoGiudice
 
I dunno if this makes a difference or not, but have you checked to make sure the legs of the rectifier have not bent in and are touching? I randomly noticed while building mine that there would be potential for that depending on how stiff your hook up wire is and how long you left the legs. Ran into the same problem when wiring up some fans for my VFD box also.
 
The etcher is working great now... I just had to replace the 1-amp fuse with a 1.5-amp fuse. Thanks for all your help.

Erin
(aka Hypocrite)
 
I just built one of these and kept blowing the fuse. I went and got some 1.5 amp fuses and they blew also. I have checked and double checked this thing and it seems to be wired up right. Any ideas, I don't know that I can handle the meter reading testing mentioned earlier in the post. I probably should have just bought a etcher.
 
M forge,
This is a 4 year old thread. Start a new one if you need help. You can put in a link to this thread for comparison of the problems.

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