need resistors values for blown-up charger 876


need resistors values for blown-up charger 876

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AidoSsy
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I need to have the values of the resistors in the picture below to be anable to fix the charger. those resistors was burn-out with no trace of there code-colors.



if it's not to much to ask, i would like to have the service manual of this product.



those two resistors are standing between me and fixing the charger.



also i would like to comment on that the charger was blown up by connecting it to a 240v outlet instead of 110v and none of the protective component where damaged, instead the power n-channel mosfet , 3904 transistors and some resistors where damaged, which i find it odd if you regard dremel as a high quality product and not a cheap Chinese one.
AidoSsy
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Sorry, i forget to add a link to the picture....



here it is:







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samotage
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I had a small cut off wire from a resistor make it's way inside my charger. When I plugged it in, POP and some magic smoke was allowed to escape...



Like you I have some fail resistors, but different ones! Some of yours are Ok, some of mine are ok, perhaps we can trade notes?



The following pics on the flickrs have my info,



http://www.flickr.com/photos/47312686@N03/sets/72157629573863783/



Thanks!

Sam,

@samotage

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http://smartenergygroups.com
AidoSsy
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Sorry for the delay.



Here are the values of your dead resistors. I've double checked it using the color-codes and my multimetter, please do the same for me.



the pictures of the resistors you uploaded are not clear. please upload sharp pictures, check there color-codes and confirm with multimetter.



thanks for your help.







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samotage
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Thanks too!



The pictures I uploaded were as best as I could do...



Your blown carbon resistor, next to what appears to be a FET or voltage reg is pictured here:



http://www.flickr.com/photos/47312686@N03/6978083941/in/set-72157629573863783/



Mine too is quite damaged, and won't measure and I could only determine the value by removing it and looking, looking. The picture above is the best I could do unfortunately!



The other resistor blown in yours was measured with the DMM, and the color codes checked out too. It's a metal film 1%



On closer inspection, mine has some "significant" fails, and unless I can find a schematic it's going into the bin...



To the Dremel people moderating this forum, is your schematic so proprietary for a charger that it cannot be released into the public domain?



Thanks,

Sam.

@samotage

http://smartenergygroups.com
AidoSsy
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from what i see in your picture it seems like the color-codes are: brown, brown, black, silver (or gold - cant determine) and brown.



when i was lookint at the one i had it seems like: brown, brown or orange, black, gold, brown. which is 11 or 13 own 1%...



can you confirm for me if the 4th color is gold or silver? and can you confirm if the second color is orange or brown?



if you take a look at my picture you can see i've replaced the dead resistor with13 ohm resistor and it fried-up by smoke with mean too much current was going throw it.



last thing: can you write down the colors of the second resistor?



to dremel: it is your fault that the resistor and the mosfet has dide on me instead of the protection components. i find it odd that your not even trying to help us in here.



AidoSsy
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Is this the color codes of the second blown-up resistor?:







Uploaded with ImageShack.us



please confirm!
AidoSsy
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sorry for floading with replys.



I've made some options of the resistor seating next to the mosfet and i want you to take a good look at the one at your hand and tell me what option you you think is the true one:



possebility 1:







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possebility 2:







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possebility 3 (the one that you saw at first place):







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again, sorry for floading...



Dremel Customer Service
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Hi this is Beth from Dremel Customer Service.  The reference you made to plugging our 120V charger into a 220V outlet is what damaged  your charger.  There are no user serviceable parts inside so we would advise you to call our Customer Service Department to purchase a new charger.  Please call on our toll free number of 1-800-437-3635, Monday-Friday, 7:00 am - 6:00 pm, CST.  Thanks so much!

-Dremel Customer Service Team
samotage
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Hey AidoSsy,



Brown, brown, black, silver, gold were the colors I could determine... Though they may have been damaged by the heat on fry up...



Beth, all the components we are talking about here are generic passive electronic components, which with the basic single sided solder mask through hole design is totally user serviceable, even with 1950's technology.



Your excuse here is quite lame in my opinion. You would have more credibility by saying this design is proprietary and we want to shift more units and not help our existing customers.



Even though this is your forum, you a best served by being honest with your customers.



Thanks,

Sam,

@samotage

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http://smartenergygroups.com


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