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Discussion in 'TiVo Roamio DVRs' started by Pchan87, May 5, 2018.
It has the added advantage of not taking up two outlets on the UPS.
My TiVo has been flaky the last few days. It would be running but very slow to populate pages like the list or season passes. A few reboots got it to start working. Also, the coax connector was very hot. This morning, the screen was black. Remote control buttons did blink the TiVo indicator light. Reboot displayed the 4 flashing lights and it no longer booted up.
Reading this thread got me to look though my box of wall warts looking for a match of voltage/amps and connector size. The best I could find was a 12V 1.25A and I plugged it in and it is working! Thanks guys. I put in an order for this Amazon wall wart which has more amps - $10 and to be delivered Prime tomorrow.
Update: The 1.25A wall wart burned out after about 5 hours. Now waiting for my Amazon replacement.
A lot of times the amperage ratings on wall warts are, shall we say, "optimistic" at best. When replacing one it's always best to go with more amps than the original. The device will only draw what it needs so you can't have too many amps and the headroom will let the wall wart run cooler and last longer. Every penny counts when manufacturing so the cheapest wall wart that will likely make it through the warranty is what's selected.
What if I tried one that had a bit more voltage? Like 19V instead of the needed 12V.
I figured that could adversely affect the TiVo so I did not try that.
Also is the connector size related to the power of the adapter?
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NO! Never use a higher voltage! Higher amperage is fine but not higher voltage. VERY rough analogy: Think of your kitchen sink. How hot the water is is the voltage and the amount of the flow is the amperage. Too hot (higher voltage) will burn your hands (circuits) but higher flow makes more water available. The size of the connector is not related to power. Just because it fits means nothing an can cause damage. The replacement power supply should match the old one exactly with the exception of amperage which can be higher. You need to look at 3 things on the power supply label:
Voltage - must match the device in terms of both number and AC or DC (i.e. 12VDC);
Amperage - must be at least equal to the one being replaced (2000ma = 2a);
Plug Polarity - Outer is usually negative with inner positive - but not always! Some are reversed and can damage your device.
A little more about amperage. The Tivo (or any wall wart powered device) requires a certain amount of power to operate and will draw that from the power supply. The wall wart draws 120 volts AC from the outlet and transforms it to 12 volts DC converting some of that energy to heat. The wall wart's components are selected to safely produce their rated output without overheating. If the amount being drawn is more than the rated output the wall wart will overheat and burn out as you experienced. Sometimes all that's left is a melted blob or even a fire.
Thanks for the info.
I did read up a bit on these A/C Adapters (AC adapter - Wikipedia).
As you mentioned, there is no relation to the connector size and the voltage/amps/polarity. It seems like there should have been a standard. Especially since the common 5.5mm can have 2 different inside diameters allowing the bigger one to fit in the wrong socket. Also, the confusion of male/female is interesting (the plug is female and socket is male!).
Not a good idea to use a supply that much less than standard. Can affect the drive, if drive does not receive enough power it will try to boot but may fail. Which can cause errors on drive. May want to scan your drive to see if anything happened to it.
After installing the new 5A adapter, the TiVo is running fine with no apparent disk or other issues.
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Glad to hear it. I love easy solutions! BTW, you mentioned the confusing male/female designations on the plug. It does seem counterintuitive but the male designation refers to the center pin in the socket on the TiVo and the female refers to the hole in the center of the plug. When you think of it that way it makes sense even though it does seem backwards.
Just wanted to add my thanks for this thread.
A few mornings ago, my Roamio (cable card) was blinking all lights. I powered off and on, same thing. Noticed a pulsing noise coming from the box. Googled and found several threads. Seemed like hard disk failure or power supply. I ordered a WD30EFRX and a 12V 3A power supply Amazon.com: [UL Listed] Chanzon 12V 3A 36W AC DC Switching Power Supply Adapter (Input 100-240V, Output 12 Volt 3 Amp) Wall Wart Transformer Charger for DC12V LED Strip Lights CCTV Cameras (6Ft Cord, 36 Watt Max): Electronics
Tried the power supply and the Roamio came up fine.
Thanks for being a good resource!
My Roamio has been unplugged for several months, due I thought to a bad PS. I just got one from TiVo (free) and am now getting the red/blue flashing lights.
is the next step a new HDD?
Great TiVo Community, thank you for yet another rescue.
My Roamio OTA froze over an hour ago. I forced a power reboot. Came back with all four lights flashing. Gave another forced power reboot. Again, all four lights flashing. My immediate next action was to check with this board, where the experts hang out.
Reading your thread here, I realized my dumb choice of hanging a tiny USB external cooling fan off the Roamio's USB port just added stress to the power supply. Removed the USB fan, powered Roamio up again, now came back just fine. Next, I swapped out its original 12V 2A power adapter, with a spare 12V 2.5A power adapter with matching polarity.
Much improved, so far for half a week (as I edit this a few days later). The 2.5A power adapter is also cooler to the touch than the 2.0A that came with the Roamio. Internal temperature dropped a couple degrees, also.
Great suggestion! I ordered it, now hooked up, runs cooler to the touch, also.
Thanks to the fine tips from TiVo Community I've upgraded this Roamio's hard drive 9 months back when I swapped in a 4 TB WD40PURZ (good performer, so far).
A few days before this freeze up I noticed a brief hesitancy (twice) when scrolling through program listings (not due to blue spinny circles). Suspect it was a predictor for the power supply problem.
THANK YOU Tivo Community! Our Roamio had the "fast flashing" lights issue this morning. I immediately thought hard drive, but after reading this thread, located a 12V/5A power supply and we are back inbusiness!
FWIW, I used the power supply from an old strip of 12V LED lights I purchased on a Lightning Deal a while back. Worked like a charm: https://www.amazon.com/gp/product/B00L7775YE/
NEVER throw out old wall warts when tossing a product, you never know when they'll come in handy! I must have 50 of them in a box.
just wanted to say THANKS for posting this and for everyone in this thread that suggested the power supply!
my front panel lights on my roamio were flashing rapidly, all four. interestingly, I had never opened mine up! But, searched online and found this thread, and said heck, for $10 I'll try it...and it worked! I also put in the model number from the original power supply, and I bought one of those which I'll probably switch to when it gets here - because this one seems *really* loose when it's plugged in (tivo end), I mean, it was falling out when I just brushed the cord. So, not sure this is the perfect match, but it certainly does power up and has been running for over an hour now.
Another failed wall wart, here. Sadly i jumped to conclusion and thought i heard the drive hunting.
Just happened to have planned on upgrading the drive and hadnt got around to it. So no big deal.
Replaced drive, same thing.
THEN noticed wall wart was warm ... Swapped with my other Roamio and both worked.
But the warmer than usual plug should have been the tipoff.
Replaced both with 3 Amp units for around 25
did you get them from amazon? do you feel like the plug is nice and snug? if so, please post a link.
All-lights flashing means hard drive. Easy enough to replace, any 3.5in drive under 3TB will be self-formatted when you put it in. Just make sure it's 5.4k, any faster drives generate too much heat and take too much Speed Test power.
well, go slow here...my all lights flashing was fixed when I replaced the power cord/transformer, as noted above...for $10 it's an easy thing to try first, before losing your recordings.