How to test a diode on a regulator rectifier using a multimeter
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- เผยแพร่เมื่อ 14 มี.ค. 2016
- Russell from Electrex World explains how to do a simple diode test on regulator rectifiers using a multimeter.
Also have a look at our latest 'HOW TO...' video where Russell shows you how to test your generator with or without a regulator rectifier - • How to test an alterna... - ยานยนต์และพาหนะ
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Hi Russel. Thank You for this video. It helped me a lot on how to use my tester on my bike rectifier. I cleaned up the rectifier and it seems to be working normal now. Once again, thank You!
Electrex World Ltd I have watched many other videos on youtube "showing" how to test reg/rec and I must say in my opinion, yours is the BEST one. Thank you very much for making it and sharing it. I really do appreciate your time and effort.
PM
This is the best explanation of testing the three phase regulator in my 2006 Yamaha Waverunner VX110. It has four blown diodes. I searched thru the waverunner sites and got nothing useful. Thank you, thank you!
Thanks Russel for explaining that SR Series regulators are bidirectional. I was testing my reg like a QR Series reg and thought it was faulty. Thank you for the great info.
Wow I’ve been looking for someone to explain this to me. Finally I know what a bad reading is. Thanks
you are a diamond geezer. very happy i found this gem of an upload
That"s the best explanation. Thank you for info.
Be blessed
Thank you that was great. Just checked mine and you just saved me money.
This video saved my life ! Thank you so much ! Subscribed and liked !
Mate you are legend, you make it very easy. Cheers.
Thanks Russel. Very useful for my bike
Stellar Camera work.
Thanks didn't know that my kawasaki z 550 ltd had a qr type ! i do now and you have put my mind at rest. i thought my rectifier was knackered but like you said it only goes one way .....
I have a different reading on the second reading for the 1st video segment. Does that mean that I have a faulty or bad rec?
Mine works on all four in the reversed way, but then when I do it the first way (red ammemeter to black regulator wire), none get a read. Is this also a bad regulator? Rzr 800
Well explained thank you
Good video. If after reversing the probes I get 3 low readings compared to the first lot, does that mean the R/R diodes are faulty?
good morning,
if I do the test that starts at time 00:25 and I get very similar values, it means that the regulator-rectifier works 100% correctly?
My battery has become hot and started smoking; Now, doing test diodes that you did, the tester gives me the correct results.
I would like to know if giving correct results with test diodes, can be equally broken and send to overcharge the battery.
thank you so much
There were 2 red wires in the connector. Best to check both?
Hi Russel whats the code of a reg/rec for a 2006 honda nt700 please? your website only lists the earlier nt650 thanks.
is up in the 700 top high /
SHOULD THE READING BE WITH IN THE 300 TO 500 RANGE ?
please tell me if good or bad ,
my rectifier test now the number is slowly dropping on my multimeter .
I am having some issues with my rectifier i think, and I found out that the VD across one diode is 0.480v dc instead of 0.507v dc that i get on the other 2 diodes. Do you reckon that is a sign of a faulty diode, or do you believe that the problem comes from somewhere else?
Do you know if I can use a rectifier from a scooter/atv, that is charging a 12v 4Ah battery, to charge a car battery 12v 60-70 Ah? The AC current that is produced by the alternator has around 15Ah.
Thks four your excellent video I have a Piaggio Zip 2T other day I drive and same one stop me and tell me my rear lights is blinking after 2 days all my lights is blown front and rear I’m surprise my fuse don’t blown also when I drive in full throttle same times is cut don’t the speed what you think is my regulator fault thank you help appreciate
thank you.. appreciate it..
V.useful video thanks v much
0.800 - 0.801 reading in red wire using forward bias but OL when reversed, is this good? And the reading from the green wire reads 0.457 - 0.460, what do you think
how do you check the voltage regulator side of the regulator rectifier
Hy Russel. I am having a problem on my motorcycle, maybe you can help me? I am stuck at the part that it says I need to check for generator resistance and the reference numbers are BETWEEN 0.1 and 1.0 Ohmns. If I get no-continuity then it says I have a faulty generator.
HOWEVER my number shows continuity, they are between 1.5 and 2.0 ohms but they are off specification and the service manual says nothing about that case.
I am lost here.
Also, the service manual also says to "check generator core is insulated" but it doesnt show how and I couldn't find anything on the internet about that. Can you explain me this?
Thanks a lot
Hi. Thanks for this. Does it have to be off the bike or can it be tested still installed
Hi, you demonstrat that check out for series or parallel technologie is not done the same way right? (sorry, i m not english native, difficult for me in hearing way ;-) )
I feel dumb (no, don't say that please), so SR is parallele one, and QR is series one.....am i right?
thank you for demonstration
Hi I've got a yamaha r6 2002 it got a 5 pin plug red and black and 3 yellow wires does it matter wich yellow wires goes were thanks steve
What if I'm reading .570, .555, .568? How much error is allowed? Or as long as it's within a certain range? Please help!
Could I do this on a 94 klx650
Hi very good video on how to do it. I have an XL 600 RM from 1986 and am trying to check the regulator rectifier, but I am not sure I am doing it the correct way. It has 3 yellow wires of course and then it has 3 more wires, a red/white, a green and a black. How should I test this? I seem to be getting no readings at all by testing it as per the Honda workshop manual. Thanks in advance.
Thomas, Denmark
Hi, mine are reading 0.50, 0.50 and 0.48. Is that considered close enough?
Great video!
Hope you can help on this issue:
A few days ago, while riding my SYM VS 125, a lot of smoke started coming out of the front of the bike and the engine started to fail. I turned off the ignition and cut the battery current.
At home I took it apart to see what was going on and the rectifier was visibly burnt.
I took the bike to a workshop where they changed the rectifier and the battery, but they didn't solve the problem. The new rectifier continues to heat up a lot and too fast, as if something is short circuiting.
As they couldn't solve the problem and it still cost me a few €€, I picked up the motorcycle with the fault.
Tests i have done:
- the battery is new and has 13.1V before the starter
- with the three yellow wires from the stator connected to the rectifier, the bike works fine at low revs, fails at medium and the rectifier heats up uncontrollably; with these wires disconnected from the rectifier, the bike works well at any speed, but as we know, the battery is not charged
- at idle the 3 yellow wires measure about 40V from stator
- the resistant test on stator show equal values on three wires; no ground conductivity; no open circuit on each coil
- apparently all the masses are well connected.
Any idea what it could be causing this recurrent failure of the rectifier?
Note: traditional G6Y carburetor engine with electronic rectifier and CDI, year 2010.
What is the acceptable range . Mine has 598 / 600 / and 609 . is that ok it's a difference of about 11 ? Also do I have to fork out for a stock or can I get a cheap one .
hello, as you have shown, the regulator looks solid but no energy output, no voltage. The stator is newly clung and rugged, the outputs have ~ 50V. Is there another test method? motorhome Ktm duke 390 2016.
Excellent tuition, rectifier fine, turns out after market alarm has massive drain
Hi Russel great video!! I have a question for you, what’s the acceptable difference between the readings?!
Great video! First time to analyze voltage regulator from my friend´s 2008 skidoo and according this video everhing should be fine.Made also test from stator and that should be run fine also. So unfortuntely still no glue why sled is not charging...
I did a reverse bias test by placing the red probe on the red wire and the black probe in the black wire and I got a reading of 5.96. That’s bad right?
Good example case to have that defected rectifier as well.
Hi sir
My question is
When the Burgman 650 bike is running for 2 minutes, it the regulator too hot to touch by hand?
Is this temperature a problem or is it normal?
Thanks Russell, Great clear explanation. Question tho: If one of the readings is out by 6% or so, lowest one on 506 ,other 2 on 534 and 539, is that too uneven.
Hello i have the same problem you found the problem?
Thank you
Can you tell which bikes rr unit that ?
Hello. Negative lead on positive side I get following reading : .553,.553,.544
Positive lead on negative side : .557,.521,.551.
Are the small differences indicating faulty rectifier?
Thanks!
My 2007 Triumph Speed Triple has an issue trying to start. I thought it was the battery so I purchased a new one but that doesn't seem to be the problem. The issue: When trying to start the bike the starter will turn over for just a second or two and then nothing and the dash lights and headlight all go black. I tested the battery when off the bike and it says 12.95 volts but after installed and this issue arises and the dash goes black the battery, while still installed shows 1.25 volts or thereabouts, I don't remember exactly but the reading goes really low.
Then I disconnect the battery and it reads just fine, 12.9 volts. When I reconnect the same sequence happens again...Headlight and dash will come on and when I push the starter button the starter will only turn over for a second or two then stop and the lights all go black.
I pulled the alternator rectifier and tested the diodes and they all read fine, about .542 or so on all three and reversing polarity same results.
Do you think if the regulator is bad it will cause this shutting off of system and then the low volt reading when the battery is still connected?
Any input would be appreciated.
Thank you
When I put the clutch in the gear of my Honda MC22 RR bike, the neutral bulb lights up, I replaced the diode but the problem is the same, thank you for providing a solution
Hello, can you please tell me whether a faulty reg / rec can cause the stator to fail like burn one of the phases? Thanks
Ian Bolchi yes it can
Cheers mate
Ian Bolchi Suu
rectifier se maximum DC current kitna aana chahiye
meri bike ki battery charger ho rahi h lekin full charge nhi ho rahi h
light kam aa rha h
Hi there, I have a triumph street triple r 2011 and am having problems with keeping the battery charged. I did this test - with the positive lead on the negative connection i was getting a reading in the 500's on all pins, but with the negative lead on the positive connection i was getting a reading in the 130's on all pins (note my diode tester shows readings differently, e.g. as 138 not as 0.138). Does this imply the rectifier is the problem? Thanks.
did a new reg solve your problem? I am having the exact same issue getting different readings while reversing pos and neg
Can a rr unit pass these test but still overcharge??
When I had the positive lead of the multimeter probed into the 3 yellow wires, I got 0.45 ohm for each one of them. But when I had the negative lead of the multimeter probed into the 3 yellow wires, two of the yellow wires showed .1 ohm each and one yellow wire shows 0.09 ohm. Is the rectifier still ok or is it malfunctioning already?
Does any one have an answer for this? Should the three readings on the negative lead and be similar to the readings on the positive lead? I get the same set of readinngs; 441, 441, 441 and then 103, 103, 101. Or should both leads give values thats are in the 440'ish range?
Help. I'm getting the same reading on each phase but it's really low. .187 on all.
Diodes are checking and what about regulation
Ok i have a qr type and I have 400ohms for 2 phases and nothing for the third , is it dead , the symptoms are that the bike doesn’t charge
Hi, could you help me?
I've an honda vfr 800 FI my 2000. the three phases rectifier (three yellow line) and a plug with two red/white line and two green line plus a black line alone. I put the neg of the multimeter on each red/white line and i put the red of multimeter on each yellow line and i read 484, 488, 487 for the first and 484,488,487 for the second red/white line.
than i put the pos of the multimeter on the first green line and i read 478,476 and 486 for the first and 478,476 and 486 for the second. I don't know the meaning of these values. The rectifier is good? what does the black wire do?. thank you so much for your answer.
+Giuseppe Nucera
the recharge tension to the battery is over 16 volt at 5000 rpm
Thanks - I have an Electrex World RR69 on VFR800 2001. Will be this a MOSFET one? I can't see it on the Elctrex World website? And is testing the same? Thanks again
Thank a lot
Hi Russell could you explain why my Honda 250 rectify overcharging
Hi, from my experience that is the regulators job, to limit the charging voltage to the battery. So if it is overcharging your battery it is not regulating the voltage to your battery, so the regulator/rectifier is in need of replacing. Hope that helps you out
The bike can start without regulator?
Finally good video easy for smart guys like me 😂
Mine has two green wires instead of black. It’s off an 02 Ducati monster. Only numbers on it are
RS41. 50. 1K 23. Going by the video I believe it tests good
mine is not showing nothing but 1 lol the only wires thats getting a reading is the green wire
shorted diode would cause total no power ? meaning even digital meter no light
Shorted diode would melt the wires to the rectifier and ground.
How to test and verify that a 3G ford regulator is faulty
I have all 000 on mine so is bad then right i am confused 😕 with my how is it that all are bad
What if one of the 3 progs reads 3x as much as the other 2?
Then it's still time to replace it. All three should be about the same
Which is the robust regulator. What is the value that should be
Im pretty sure it does not have a set value. As long as the readings are of similar value the reg/rec is healthy. If values differ by a great margin or read zero, the reg/rec is not healthy.
Its called Forward voltage drop in diodes... And you miss to explain difference between Shunt and Series types of regulators.
@Ivan Hi man, u seems to be aware about technologie (parallele vs series), anyway it's mosfet or scr, the way to test it is different then? (i ask because i m in an urgence, and reading make things more clear to me, while hearing is too difficult) can u help understanding?
hey I have a problem with my honda steed vlx 400 model 1994 , suddenly my regulator rectifier died , I bought a new regulator made in Taiwan , I put it in my motorcycle all is good , one moth latter or two months my new regulator is died , I bought a new Taiwan regulator 1 week same of that one and is died again and every regulator I put in my motorcycle a little of time and is died and burn and trash
and I dont know what I should do I pay above the 200$ of regulatores
I want any help please , thank you thank you very much , and I am an aircraft maintenance student
I want to start with any test , stator or rotor or battery or if there any short in my circuit or if the new regulator is made in Taiwan and the motorcycle is japan please any help thank you.
Use an aftermarket stator and regulator for your bike and fit them both at the same time. Meanwhile get your battery charged externally just before you fit them. Good luck bro
maaring di maganda yung binili mong rectifier na galing taiwan bakit di magsubok ng ibang brand ng rectifier
It is my understanding that each diode has two functions. 1. To allow flow in one direction. Hence the .56x reading. And 2. To prevent flow in the opposite direction. Hence the OL (out of limits) or 0.0 reading. It could fail in either direction so you still want to check all three diodes in both directions don’t you?
I think it's Open Line
Happy
Except most regulators only have one plug ?
Hi men I have a gsxr 750 2005 I replaced stator and regulator but still having charging issues currently going crazy 🤯 I made a video on my channel if you can take a look and give me any advice thanks
❤❤❤❤❤❤❤
K.
There’s 5 wires in rectifier
Red,Black with white,grey,red with white and yellow with white will tell me about all these wires
Refer to your bike's repair manual to know for sure. These videos will
only confuse you if your regulator/rectifier is not exactly like the one in this
video. I am getting totally different results because I have a different RR.
wojtek0000 ijjwwwws-1-6
Hi I need Your help.
I have done test similar to Your.
Here is effect: th-cam.com/video/BRbzt7J3qJs/w-d-xo.html
When I checked green wire connected to black cable in multimetr and red cable is checking yellow wires
I saw one of 3 yellow pin have got signal which shows connection. Which is probably bad? What You think?
Plzzz msg
Thank you