Question about Generac Guardian 065795 - battery charger rectifier

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I have a automotive battery charger thats a Snap-On BC4200 I believe the rectifier is burnt up in it and am looking for a replacement part. Snap-On book says the part number is BC4200-2000R but it also says no longer available. Can you shed any light on this subject or offer advice ?

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If you can find out the current it takes you can go online and buy rectifiers all day long they are pretty cheap too also you need find the type of rectifer like full wave, half wave, bridge rectifier. the bridge is usually the most common tho.

Posted on Nov 12, 2010


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What components are involved with the charging system?

Stator coil on end of crankshaft then wires to regulator rectifier wires to battery through the main switch

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I am plugging my charger in and it is not charging the batteries

There are 2 charging and battery related fuses on this model that should be checked and if burnt open replaced with the same color and fuse type. One fuse is located under a rubber boot near the charging port. Use needle nose pliers or your finger nails to remove and inspect. The second fuse is hidden under the battery box. Pull up and out to remove the battery box and inspect the fuse in the base underneath. If both of the fuses are OK open the battery box and check all the connections. You will need a long phillips #1 screwdriver to do this. Hope this helps

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I have a 1992 Rascal, Model 240. The charger assembly has a burnt mark on it. Is there a schematic or picture of the board that I can get? My brother may be able to fix it, but he can't identif

The charger is a 24v 4 amp one stage device. Its an incredibly cheap charger. It consists of a step down transformer, a bridge rectifier, a filer capacitor, and a voltage regulator. Virtually all chargers are made this way. Generic schematics

This charger is built around the famous an popular LM317 chip it really simplifies things.

I would get out my trusty multimeter and chase 24v though the device.

You may need a VOM meter only $9

Set the meter to read VAC, you should get 30VAC out of the transformer. Next check the rectifier section, Set the meter to read VDC, the output should be about 29VDC. There is a fuse in there that you can check out. Then there is the regulator, if any part of that is fried, you're going to have a hard time finding parts. i really miss the 60's when there were electronic stores on every corner. There used to be a time when you could order your your TV as a kit. You could literally teach your kids something useful at the kitchen table. Quite frankly a 2 amp charger cost $14 4 amp cost $28. Not worth fixing really.

Chargers can be found here

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1 Answer

I have an invacare ride on . The battery charger failed after the storm. Are they repairable or do I need a new one. If so, how much do they cost

The battery charger for this scooter is available from:

I believe the original equipment charger from Invacare for this scooter was a 3 Amp off board or on-board charger. The charger is no longer available from Invacare. Monster scooter parts shows this as a 2 Amp charger for the Lynx.
It would be more expensive to repair this charger than to replace it since you indicate it failed after a storm power surge. You will be happier by replacing the off-board or on-board charger for a price between $50 and $150. The only cost effective charger repair is the cord or plugs.
If the charger was plugged in during the storm, I would check the power path on the scooter for burnt fuses and wiring. Hope this helps.

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1 Answer

I have a standard configured dell inspiron B130 laptop when i push the power on the system lights flash but the machine shuts back down, i do not believe the battery is any good so i use ac power. also is...

1.have u tried using a new charger? or atleast borrow someone's charger for the same model and try bad is ur battery. if it is ok enuf to start the system can u try that once 3. try removing the battery pack and disconnect the cable for power and press down the power ON button for 30 seconds and then replace just the charger and then start the machine keep the battery aside 4. did ur niece have to yank the cable out when she finished using the computer? maybe the joint where the connector had to go in was broken 5. was there any reason for voltage fluctuation(lightning rain etc) maybe the junction where the power reaches the motherboard was burnt 6. If all these are fine then ur voltage controllers must have blown.
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1 Answer

My on 2007 Enfield bullet have some problem, every thre days battery loosing power so please let me know what is the problem Thank you

it could be a fuw thigs doing this
to many start ups and no running time to recharge the battery up,,,

dud battery ,,wont hold charge,

bike charger not charging the battery up,,,

voltage regulator leaking battery volts back into charger when motor is not running

burnt out or dud rectifier,,,not charging battery or leaking volts back into charger,,

also too many lights fitted for charger to keep up with the extra load needed,

or matbe even that new "**** warming seat" is killing the battery??? hmm?
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My phone will not turn on

Your phone could be suffering from: A dead battery. Replace it. A dead Charger not charging the battery, try a different charger to confirm. If dead replace. A faulty power on switch. You need to confirm and replace it. A dead phone (I hope not). If nothing works then the phone may be dead. Sometimes the connections snap with the slightest of jerks and the phone goes dead. You need to carry out the fault finding and rectify the fault. If it still does not come on then replace the phone. But in this order.

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1 Answer

Faulty regulator rectifier- can't start the bike

I have a '07 C90T.
I have just replaced my stator. I replaced the reg/rectifier earlier this year. I replaced the battery one year ago in October.

I firmly believe what started the problem. Two guys that I told I didn't need help, but they pressured me to let them help. They hooked a battery backwards to my bike. A lot of people believe that's what shortened the life of the rectifier and stator.

But keep this in mind. The connections for the regulator/rectifier are not waterproof. I had done a lot of rainy riding and I first found a burnt connector on the discharge side of the reg/rect. My mechanic told me I needed to replace the reg/rect so I did but I soldered the wires and made them waterproof. I didn't do this on the stator side of the reg/rect and a few months later, when the bike quit charging again, I found that connector burnt, so I cut it out and soldered and waterproofed it.

Two days after we got back from a 700 mile round trip to Red River, NM, my bike quit charging again. This time though, I have a voltage meter on the bike, so I was aware of the problem before the bike could strand me someplace. Get one of those btw.
When I checked the old stator after I replaced it, I found the stator good but the pulse signal generator bad. It's required that you replace both btw. You have to, they are joined at the grommet.

Ok well, the battery cost $60 last year and I replaced it myself.
The reg/rect cost $140 through my mechanic and I replaced it myself.
Got the stator online for $173 shipped and they advertise a better stator that puts out 20% more power.
Not counting little things like solder, tape, heatshrink and such, I'm out a little less than $375 on my charging system.
I hope it's a done deal.
Again, some think the problems began when the battery was hooked up wrong, but I lean to believe the sub-standard Suzuki connections may have a hand in this.
Hope this helps. . . Joe

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1 Answer

No Power

You should measure AC voltage from the output of the transformer to the bridge rectifier, and after the rectifier you should see a DC voltage (you may also read some "ripple" AC voltage on the DC side as well). Check across each battery to see how many volts DC they are receiving (as they will all be in series connection ie one after the other). Batteries are the usual problem with faulty UPS's. You may have a problem battery or multiple problem batteries and they may need replacing.

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