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I need a Resistor capacitor diode

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Michaeljp86

New Member
I just joined, looks like a good forum.

I have a electric motor speed control I need to repair. It has a resistor capacitor diode thats bad. I cant seem to find the one I need. The numbers on it are
RCD 2551
R010J9622

Anyone know where to fond one?
 

mramos1

Active Member
The resistor and cap should have their values on them if not burnt. What is the number from? The diode? Any picture on the bad parts in the circuit?
 

Mr RB

Well-Known Member
I'm pretty sure it's a 0.1 ohm in a 2 watt or 3 watt package.

The main reason they blow is because your main semiconductor (triac?) has probably crapped itself, but you might be lucky and it's just the resistor.

So how do you know the resistor is blown? They dont normally show any external symptoms.
 

Michaeljp86

New Member
I'm pretty sure it's a 0.1 ohm in a 2 watt or 3 watt package.

The main reason they blow is because your main semiconductor (triac?) has probably crapped itself, but you might be lucky and it's just the resistor.

So how do you know the resistor is blown? They dont normally show any external symptoms.
Some idiot wired it up wrong, Im pretty sure this is the problem because the motor control blows the fuses as soom as the power is on and I checked this and it seems to be the short. I guess the insides of it melted together.

Do you know where I can get a replacment?
 
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Mike_2545

Super Moderator
If that is a .1 ohm resistor then your meter will show it as a short, that may not be the problem.
 

Michaeljp86

New Member
If that is a .1 ohm resistor then your meter will show it as a short, that may not be the problem.
What would be a problem then if its was wired up wrong? It blows a 15amp fuse instantly. There is just a transformer and a few capcitors if I can remember. There is switch and rheostat but they seem to be fine.
 

Mr RB

Well-Known Member
There is probably a semiconductor, probably a triac. And it's probably blown. And you should probably take it to a qualified repairer of mains appliances since you have trouble even finding the triac (please don't be offended). :)
 

Michaeljp86

New Member
There is probably a semiconductor, probably a triac. And it's probably blown. And you should probably take it to a qualified repairer of mains appliances since you have trouble even finding the triac (please don't be offended). :)
I think there is 6 triacs that screw to a heat sink. Its down the basement so I cant say for sure. How to I check a triac?

I dont get into electronics much, just things like motors, motor starters, breaker panels, stuff like that. Id like to fix this on my own. If I cant its no big deal.
 
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