Commercially, No! But depending on how good you are with a soldering
iron and able to determine what is destroyed you might be able to repair
them. Many times it's the diode bridge and you could replace the diodes.
Thanks for the response.
You seem to know alot about electronics, is it resonable to say you
might know the specifics of a diode bridge? like where to get them at
I can see the bridge, or what I think it is. It appears to be burned.
I'd have to get a better iron, and stronger magnifier glass. If I knew
I had the right parts I might be willing to try.
Beyound that, I guess I'll have to give it up.
We are so wasteful.
Jon Miller wrote:
like where to get them at what rating,etc.<
Sorry I don't. On one of the lists I belong to (can't remember which
one) somebody did fix some of their decoders. If it's the bridge I would
suspect any 1+ amp Shcotty(sp) diodes would work. You might try this
question on the Digitrax Yahoo list or even a call to Digitax and might they
probably will tell you the part they use.
As many have said the cost and time may not be worth the effort.
You are faced with the dilema that faces most folks
with contemporary electronic equipment that has
failed...and that is...no one can afford to fix them
because a new one is cheaper than the repair costs.
The perfect example is the Digitrax DH123D. You can buy new ones for $15, while
repair cost- not including postage- is $17.
you may now choose between the short answer or the long answer
SHORT ANSWER: Throw it away and get another.
The problem with repairing decoders is that sometimes the proper parts are not
available. This may be for a variety of reasons, one of them being that a
FET with a given footprint needed for the decoder may out of manufacture. Many
decoders with the same model number will not really be the same inside.
Parts from a current production "Model A" may not fit or function properly a
year-old "Model A".
Most likely, what you have done, is you have let the smoke out of the big
FETs. This is the most common failure mode. Although you probably can repair
it is likely that you will have to pay more for the replacement FETs- if you can
find one that will work- plus a shipping fee, than you would have to pay for a
If you mess up the microprocessor in the thing, you are hosed. There is no way to
repair the micro or replace it with another, as the micros are programmed at the
decoder production facility, not by the manufacturer of the micro. Even if you
program the thing you don't have- and can't get- the programming code, so you're
still hosed. The best bet is usually to just. . . . . that's right. . . .
throw it away and get another.
Trouble is, by the time you get the returned unit on the workbench, have an
intelligent person pick up tools and actually think about it--you've spent
more than $15. Repairing something that cheap just isn't worth it.
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