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#110916 by lbmofo
Wed Jun 12, 2013 8:54 pm
Ooma Hub:
12V 1A or 12V 1.2A
5.5x2.1mm
Inside Positive (+) Outside Negative (-)
Barrel Length 9mm

Ooma Scout:
5V 2A
3.8x1.35mm
Inside Positive (+) Outside Negative (-)
Barrel Length 6mm

Ooma Telo:
5V 2A
3.8x1.35mm
Inside Positive (+) Outside Negative (-)
Barrel Length 6.9mm

Ooma Telo Handset:
5V 0.5A
Mini USB
Plug Length 8mm

Ooma HD2:
5V 1A
Mini USB
Plug Length 8mm

Ooma Linx:
N/A; "Wall Wart" Form Factor

Example Adapter Tips - Outer Diameter x Inner Diameter:
Adapter Tip Sizes.jpg
Adapter Tip Sizes.jpg (17.9 KiB) Viewed 18991 times

Example USB Connectors:
USB Connectors.jpg
USB Connectors.jpg (21.63 KiB) Viewed 18945 times

Info on Barrel Connectors
Info on USB Connectors
#110999 by rjcrjc
Sun Jun 16, 2013 10:01 am
Is that correct on the size for the Ooma Telo? I'm measuring my plug, looks to be 2.5mm x 1mm and about 5.5mm long.

I am looking to confirm as a lightning strike fried my Ooma, I am trying to determine if it was just the power supply or the device itself, so I'm looking to get a cheap power supply to test it.
#111044 by lbmofo
Tue Jun 18, 2013 7:07 am
rjcrjc wrote:Is that correct on the size for the Ooma Telo? I'm measuring my plug, looks to be 2.5mm x 1mm and about 5.5mm long.

Correct power adapter for Ooma Telo and Ooma Scout:
5V 2A
3.8x1.35mm

I tried tip size 3.5x1.35mm (more common in the market place) and it works well. Just make sure you get the barrel/plug length as close as possible; would look awkward if barrel too long for example.
#111085 by montiamo
Wed Jun 19, 2013 8:56 pm
lbmofo wrote:
rjcrjc wrote:Is that correct on the size for the Ooma Telo? I'm measuring my plug, looks to be 2.5mm x 1mm and about 5.5mm long.

Correct power adapter for Ooma Telo and Ooma Scout:
5V 2A
3.8x1.35mm

I tried tip size 3.5x1.35mm (more common in the market place) and it works well. Just make sure you get the barrel/plug length as close as possible; would look awkward if barrel too long for example.


Where would one purchase these replacement power adapters? I have a Telo and there's nothing wrong with its adapter, but I'm thinking it might be a good idea to have a spare on hand just in case. I did a cursory search at newegg but couldn't find anything appropriate. Suggestions anyone?
#111086 by lbmofo
Wed Jun 19, 2013 11:03 pm
Try Amazon or eBay.

I got this one from eBay (search for AC DC Power Supply Adapter 5V 2A 3.5MM x 1.35MM) and it failed after 4 days; seller sent a replacement that failed in 1 day. I'd stay away from any generic adapters that look like this.
AC DC Power Supply Adapter 5V 2A 3.5MM x 1.35MM.jpg
AC DC Power Supply Adapter 5V 2A 3.5MM x 1.35MM.jpg (28.95 KiB) Viewed 18406 times

Perhaps try to find a device (router or something) that uses the same type of adapters (but hard to find one with the same tip size).

What you need to know to safely replace or substitute AC adapters
#111834 by lbmofo
Sun Jul 21, 2013 3:48 am
lbmofo wrote:I got this one from eBay (search for AC DC Power Supply Adapter 5V 2A 3.5MM x 1.35MM) and it failed after 4 days; seller sent a replacement that failed in 1 day. I'd stay away from any generic adapters that look like this.

Image

Perhaps try to find a device (router or something) that uses the same type of adapters (but hard to find one with the same tip size).

I lost all faith in generic power adapters on eBay and Amazon.

If you have an Ooma Telo or Scout needing a new power adapter, probably the best thing to do is to call Ooma Support and get a Telo power adapter (works for Scout as well) for a bit less than $20 shipping included.

Or you can do what I did (for my Scout's failed power adapter replacement): I took a spare D-Link DAP-1522 (wireless bridge) power adapter (5V 2A), cut off the tip and replaced it with the tip from failed Scout power adapter.

D-Link Adapter.jpg
D-Link Adapter.jpg (44.94 KiB) Viewed 18361 times

Scout Adapter.jpg
Scout Adapter.jpg (42.08 KiB) Viewed 18361 times

D-Link Adapter and Scout Connector Before Splice.jpg
D-Link Adapter and Scout Connector Before Splice.jpg (50.68 KiB) Viewed 18361 times
#111835 by lbmofo
Sun Jul 21, 2013 3:52 am
Finished product: D-Link power adapter with Scout power adapter tip
D-Link Adapter with Scout Connector.jpg
D-Link Adapter with Scout Connector.jpg (46.51 KiB) Viewed 18359 times

I am sure there are other OEM power adapters that would work as well. Tip swap is no big deal if you feel comfy with soldering and using a multi-meter (make sure no short, proper voltage, inside of tip is + etc.).

For Telo and Scout: D-Link AF1205-B Power Adapter 5V 2A (definitely needs tip swap)
D-Link AF1205-B 5V 2A.jpg
D-Link AF1205-B 5V 2A.jpg (24.74 KiB) Viewed 18358 times

For Hub: Netgear T012LF1209 Power Adapter 12V 1A (maybe needs tip swap; tip is 5.5x2.5mm instead of Ooma Hub 5.5x2.1mm)
Netgear T012LF1209 12V 1A.jpg
Netgear T012LF1209 12V 1A.jpg (40.81 KiB) Viewed 18358 times

Important note: Ooma Scout and Telo power adapters can take voltage inputs from 100V to 240V so if you take them to some foreign countries with 240V power, you'd just need plug adapters if needed (no voltage conversion device needed). However, the D-Link and Linksys adapters cited for example above can only handle 100V to 120V as input. (Ooma Hub factory power adapter takes input 120V).
#117760 by hover41
Wed Mar 05, 2014 12:34 pm
Just an FYI for the Ooma Telo.

My power supply failed last night. I used a USB wall outlet (an adapter that plugs into a wall 120V outlet and supplies 5 volts) that can supply up to 2 amps; got one at Home Depot for about $3 but they're pretty common now). I then got an old USB cable that was lying around and cut the cable to keep only the male end and a lot of cable, stripped the shell to expose the small wires Inside (the red is for +5V and the black is ground). I cut the cable of the defective power supply and identified the conductor that connects to the inside of the tip and connected that to the red wire of the USB cable; then did the same with the cable that connects to the outside of the tip and the black wire of the USB cable.

It works, although I'm not sure if the calibre of the wires Inside the USB cable can handle 2 amps well. At least, this is tiding me over till I receive the power supply that Ooma is shipping me.
#117764 by lbmofo
Wed Mar 05, 2014 1:56 pm
That would work too but with USB plugs, make sure it is rated the same as what Ooma calls for (Telo = 2A). A lot of USB plugs out there are 1A or less. Also, a lot of work swapping tip :)

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