I'm replacing the start capacitor in my overhead door legacy garage door opener. There are two yellow wires on one side and two orange wires on the other side. What is the best way to discharge the old capacitor before I install the new capacitor?


(note: though not directly related to mercedes repair, I need the garage door to work so I can the benzes in and out of the garage......)

Touch your tongue to all the leads simultaneously. Get video.

Seriously, just short the leads with a screwdriver or pair of pliers. You may get a spark, take due precautions. Probably a bad idea to do this while standing barefoot in water or with a natural gas leak.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

Is the capacitor actually bad or are you just throwing parts at it? If the cap has died, why waste time discharging it? Motor run caps have a bleeder resistor built in. Pull the leads off and swap the new one in. No harm, no foul.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

As said above, should have a bleed resistor, but touch your tongue to it to make sure (video rolling). Seriously, short it with a screwdriver before handling it, but shouldn't have anything stored.

Actually I am throwing parts at the garage door opener. The new capacitor was only eight bux so I thoguht why not? If this doesn't fix it I'll take a look at the gears, etc.

Yesterday and today's temps have been over 100 degrees although it feels like it is 200 degrees while working in the garage so hopefully this will fix the problem.

Next house I build WILL have an air conditioned garage complete with a four post car lift. I can't wait.....

What exactly is or isn't your garage door doing? After I had a failed spring replaced it worked well for a week then had it stay cloesed but after a few attempts it would open. I ended up adjusting the safety force detection tension and all as been well.

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92 e300d2.5t
01 e320
05 cdi
85 chev c10

A failed capacitor will have the motor just hum when the opener attempts to operate. It will eventually trip out on thermal overload or pop a circuit breaker on the back of the unit.

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Yesterday around 1:00 PM the opener would hum for a few seconds. The door would not open. So....after some reading and since a new capacitor was cheap, I decided to replace it. I'm working on in this morning; if it works I got out for eight bux.

Question; old capacitor rated 50 - 60 MFD 220volts 50 - 60 HZ The replacement capacitor they sold me rated 53 - 64 MFD 220 - 250 volts 50 - 60 HZ.

Will the new one work properly?

Close enough for horseshoes, hand grenades and nuclear weapons.

And garage door capacitors

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment