I have an MRC AH601 transformer and the right side just stopped working. I'm thinking it might be the circuit breaker. Does anyone know if there are circuit breakers available anywhere?
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It might be a good idea to first check the circuit breaker you suspect as bad before looking for a replacement. The safest way would be to unplug the transformer and check continuity through the breaker.
If it checks bad (no continuity), a picture of the breaker along with its make and model and any electrical specs on it may be helpful in suggesting a replacement.
If it's good, check for any loose throttle linkage connections, other mechanical failures and loose electrical connections.
After much research, I found a dealer that sells the circuit breaker for this transformer. The dealer is MOUSER ELECTRONICS. The part number is 691-CMB07311C3NBA. I have to open up my trans to check the circuit breaker.
Anyone know who has the volt gauges for this transformer. Should I get a continuity reading across the posts of these gauges. The power is off.
@Jetman posted:Anyone know who has the volt gauges for this transformer. Should I get a continuity reading across the posts of these gauges. The power is off.
A volt meter is intentionally extremely high impedance (resistance) so depending on the setting on your meter, it's is say in diode test beep mode, then probably not given the high impedance of the meter.
An Ammeter is a current shunt so it should be low resistance, but then you really are not measuring the meter portion of the ammeter- you are measuring the shunt.
Given how simple this transformer is, I think you are going down a path of troubleshooting I could not get behind.
The first most common failure is the fact that the bell, whistle/horn, and direction button MUST be normally closed, and they are KNOWN to break and fail, that's where I would be concentrating my effort. While a circuit breaker could fail, again, easy enough to bypass or common sense test because it too should be normally closed if you want power. Again, given the direction button is a normally closed button, and if it fails- you ain't getting no power through the circuit.
https://ogrforum.com/topic/mrc-ah601
Pictures of the inside
https://ogrforum.com/...0#146001354984582670
What tends to happen is these large solder joints crack on the button switch assemblies. Again, all 3 are NORMALLY CLOSED for power to pass through from one end of this board to the other. Especially the direction button.
I'm not saying a meter cannot fail, but the way to test a volt meter is with a known voltage source.
Attachments
Diagrams- sorry just grabbed this from my local folder so I'm not sure who the original source was before my edits.
Again, sorry in advance, the original source was a bell and whistle DIY thread I think.