Attempting to Revive a Slow Lasko 3733 Box Fan with Marco Motor

Рет қаралды 1,790

18 күн бұрын

Attempting to revive a 1999 Lasko 3733 box fan with a Marco shaded pole motor that's running significantly below spec for unknown reasons. This is a fairly common problem with these motors, but the issue is typically limited to the medium speed. This one seems slow on all speeds. We will clean and re-lubricate the bearings in attempt to fix. We will also check the resistance of the cord and switch to make sure that is not causing any isssues.

Пікірлер: 53

@sccpsteve 16 күн бұрын

This is my final attempt to post the comment. If you see any previous attempts at posting the comment, please delete them If you hear rattling in the switch, it means fragments of the wires have broken off inside. Avoid using a switch that rattles, as it can short out and cause issues with motor speeds. I've experienced this myself, and replacing the switch solved the problem. You can find suitable replacement switches online. Though they may not match perfectly, they should work if you force the knob onto the stem. Regarding the rotor, it's usually supposed to be magnetically attracted to the stator's rotating magnetic field. A defective rotor might not turn as fast as it should, which could be the issue here. I missed the 'new old stock' detail initially due to my ADHD. Hope this helps, and glad to hear you restored the low speed!

@fordmuscleluis9710 16 күн бұрын

I can't wait to see part 2 of this fan soon such as getting this box fan back to functionality good video bro

@JordanU 10 күн бұрын

Glad you enjoyed it.

@1ChevyGuy375 16 күн бұрын

Great video Jordan, very intriguing to see the tear down and try to solve the problem. Hopefully the switch will work again and in part 2 you can get the fan working the best you can. The problem could be in the quality of the motor windings and the varnishing of them may help. It will be interesting to see if you find a solution.

@JordanU 10 күн бұрын

I don't expect any performance change from the varnish; the revarnishing is just for longevity.

@caleblollar9154 16 күн бұрын

Great videos lately, keep it up!

@CartierEd 15 күн бұрын

He’s certainly getting that paper churning out the videos!

@JordanU 10 күн бұрын

Thanks.

@LemontTheFanMan 16 күн бұрын

I can't wait to see part 2 of this video bro hope that you can get it going again and get the motor running at full power in med and high speed

@JordanU 10 күн бұрын

Thanks for letting me know.

@LemontTheFanMan 10 күн бұрын

@@JordanU Your welcome bro

@davidzeringuethefanman6292 16 күн бұрын

I really enjoyed the video

@JordanU 10 күн бұрын

Thanks for letting me know.

@brunoshow124 16 күн бұрын

The newer model 3733 uses a very similar switch that should be a compatible replacement for this switch.

@JordanU 10 күн бұрын

The switches do seem to be interchangeable.

@ryanstrains6446 16 күн бұрын

Really sucks Jordan that just doing some work to the bearings did not solve the problem. It may be true that running it for a while may help get the motor running again at speed. That contact in the switch though may have been maybe a minor problem. Honestly this may be in order for a new fan motor if this can’t be solved. It’s making me now wonder if could do with the tightness of the windings and how that could effect the current running in the motor by being slightly loose which could affect the magnetic field that makes the motor spin. If they were to be wound and tight the way they should be, it may effect the performance of the speeds. If these motors were known for problems with the windings not being tight or wound correctly, that may cause issues for the speeds and how the motor works. Hopefully you can get that switch fixed and see if you can get it running again. Also look forward to if you get the switch here fixed the repair/restoraction of the original vintage Lasko 3733 that you already own.

@stevethefanman8955 15 күн бұрын

Oh man not good, I hope you can get the motor functioning properly, I do have a replacement switch but the problem is shipping costs are getting crazy at this point it seems . Those are really good fans and replacement parts are probably getting hard to find. I hope you can get this straightened out and looking forward to part 2 of this.

@JordanU 14 күн бұрын

Apparently it's going to take some effort, but I'm convinced I should be able to get the switch to work again.

@CartierEd 15 күн бұрын

Thank you for doing this video. I have a since new 1997 3733 with D blades. Mine has a lot of hours and I did a full restore in 2016. I have the same exact issue you do and can’t figure it out either. I still run mine and it’s fine. Just not as powerful. Looking forward to part 2. And would love to see a video on revarnishing the windings. (How do you do that?)

@JordanU 14 күн бұрын

I'm really hoping to be able to find a solution to this. I'm convinced it has something to do with the bearings, and perhaps a more extreme motor servicing will be required to fix it.

@CartierEd 14 күн бұрын

@@JordanU At the time with mine I did what you suggested and put some hours on it and then re oiled and run again.. I did this 2-3 times and performance did improve but not 100%

@douglasgriffin35 8 күн бұрын

Jordan can you make a video on the new Lasko Wind storm fan please

@vacuumcarfanguy 16 күн бұрын

great video got any ideas a how to replace a window ac capacitor need to fix my 1996 Goodman window ac from the dump

@JordanU 10 күн бұрын

Thanks

@djbrucebanner9882 16 күн бұрын

I like it 😊

@JordanU 10 күн бұрын

@tonymacaroni_1 15 күн бұрын

To be honest the lasko 3733 and the galaxy 3733 are both the best fans out there in terms of performance and airflow. The quality is also good but after years of use all motors wear out especially when they run dry or there dirty and have never been lubercated

@JordanU 14 күн бұрын

I think they're both a good value, but very far from the best in regards to performance. The motor in this one has never been used.

@fantime2061 16 күн бұрын

Hey cool fan I found my new switch replacement on Amazon

@JordanU 10 күн бұрын

@fantime2061 10 күн бұрын

@@JordanU This is the fan switch I put in my 3733

@fantime2061 10 күн бұрын

I was trying to add the link to the comments. I’ll just put a video up on my channel.

@andrewg593 16 күн бұрын

This may seem like a silly suggestion and I can't guarantee I'm correct but perhaps the motor just needs some time to warm up before it runs full speed? My 1997-98 3733 has always worked that way. The speeds run substantially slower than normal for several minutes before the motor warms up and then it runs at the proper speed. I have serviced it and it still does the same thing. Bearings free as can be yet still runs slow for several minutes. Power draw is within reason so I'm not sure why these motors do this.

@JordanU 10 күн бұрын

That sounds like a bearing issue to me. There can exist situations where there is little friction at low speeds, but increased friction at higher speeds.

@logansmokes.2762 16 күн бұрын

the loose windings might be affecting it.

@JordanU 10 күн бұрын

The lose windings are an issue for longevity of the motor, but have nothing to do with the performance.

@kd4baoc612 16 күн бұрын

I don't have carpet on my work surface when working on electronics. I have a wooden top bench and place a hard rubber mat on it went required.

@JordanU 10 күн бұрын

@MariahWong 16 күн бұрын

Since taking the motor apart and cleaning and lubricating it didn't work to restore it, I would have just parted it out at that point instead of messing with the switch. It would have been nice to have had the switch for the other one, but hey, at least you have an original OEM handle for it.

@JordanU 10 күн бұрын

You don't just give up because the first attempt at something doesn't work, that would result in everyone being dumb.

@MariahWong 10 күн бұрын

Attempting to fix something that doesn't work with zero knowledge is also dumb. Especially knowing you can make it worse or even unfixable.

@JordanU 10 күн бұрын

@@MariahWong Since that's not what happened here, I don't understand your point.

@AxelTheFanMan5733 16 күн бұрын

It sucks that the switch stopped working

@JordanU 10 күн бұрын

It can be fixed.

@grandtheftauto1233 16 күн бұрын

Seems like it got some extra juice

@JordanU 10 күн бұрын

I don't understand.

@FSM_Reviews 10 күн бұрын

@@JordanU My best interpretation of the comment is that, compared to the initial condition, the performance of the fan has been somewhat restored. Hence the phrase "extra juice". Juice is a slang/informal term for power or strength.

@traces-without-is-dead-lol 16 күн бұрын

At 22:47 excuse you

@JordanU 10 күн бұрын

Excuse yourself.

@flebnard 16 күн бұрын

8:11 if you do.. get low static/low pile carpet. Static can kill devices and high pile would be a nightmare to find dropped washers or screws. Or "oH iT nEvEr hApPenEd tO mE" and totally disregard my comment

@sccpsteve 15 күн бұрын

.... it's a MOTOR, specifically a shaded pole motor. It has NO electronic circuitry to worry about. It's all just copper wires wound around an iron core. Now, if it was an ECM motor, that's something to worry about.

@JordanU 10 күн бұрын

That would have been a perfectly reasonable suggestion, until you had to end it with a snarky remark for some reason.

@FSM_Reviews 10 күн бұрын

@@JordanU He's probably had to deal with self-righteous or ignorant people in the past. Perhaps those experiences have made him jaded. I've seen the same behavior in some sales people, particularly senior sales managers or associates. After encountering the same behaviors from clients for decades, you do kinda get annoyed, and the snarky responses come up as a form of coping mechanism. Of course everybody deals with these situations differently, and how someone else responds to a certain repetitive stimulus won't necessarily be how you will.