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Power supply repair notes

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 08:47
First off. Hello, my name is Todd. I am new here. I just bit the bullet and bought a working used TiVo HD Lifetime off Ebay yesterday.

I am somewhat of an expert at repairing SMPS (Switching Mode Power Supplies). I taught myself about 15 years ago when I was finding dead VCR's at garage sales and reviving them. Now I use this trick on HD TV's that my neighbors are throwing out.

Everything I have read so far on this forum on this subject has failed to mention the temperature rating of the replacement caps. Most electrolytic caps are rated at 85°C. This is not sufficient for the cycling duty that these caps endure and failure may quickly reoccur. Spend a little more and get 105°C rated caps. These are available from the NTE rack in the blister pack. uF must be the same. Voltage rating can be higher as long as it fits on the board and in the case.

It is good practice that ALL caps should be replaced, not just bulged ones. In fact a cap can be bad without bulging.

The surest way to determine if a cap is bad is to test it for ESR (Equivalent Series Resistance). In order to do this, you will need an oscilloscope and a square wave generator. I am fortunate that my brother lets me use his old oscilloscope. There are applications that allow a PC sound card to stand in for a low frequency oscilloscope. The wave generator can easily be bread boarded from a 555 timer chip. Frequency should be ~100 kHz. Peak to Peak voltage around 100 mV, although this not critical. You need enough to inject a good signal, but not so much that you blow the cap. Shorting your test leads together gives you the reference waveform...very little change in the square wave amplitude on the O-Scope screen (no ESR). Now place the test leads on the leads of the cap. A GOOD cap will show very little decrease in amplitude. On a BAD cap the amplitude will completely collapse. A cap that collapses about 50% should also be considered suspect and replaced. The uF rating of a GOOD cap will effect the ESR. There are charts available that show the expected % amplitude of a GOOD cap.

I am not an Electrical Engineer, but I play one on TV.

Todd K.

Summer Update cause my HDMI extender to stop working?

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 08:30
Just completed the TiVo Summer update. The next morning my Atlona HDMI over Cat5 extender (AT-HD4-SI40SR) is no longer working.

When I turn on, it can no longer see an input signal and then sometimes it says device output not supported.

Could the Summer update be the issue? Or did the Atlona device just stop working and it's a coincidence.

HDMI Cable error and no sound

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 08:21
About a week ago I started receiving an error on my Tivo that said my HDMI cable is not supported (I am using a Monster HDMI). Normally, I would just change the channel and the error would go away.

Now, I am not getting any sound. Before if this happened, I could just turn off my receiver and turn it back on and it would work. Sound DOES work on my Xbox One that is passing through my Tivo.

This started happening about a week ago or so. The only thing that changes with updates etc... is Tivo so I am assuming that is what is causing the problem.

Any ideas??

I am using the Roamio Plus

Cox in Tidewater, VA

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 07:44
My mother is moving from DirecTv to Cox and I am considering putting in Tivos. Anyone in the Tidewater area have any good or bad experiences they want to share? The Cox sales rep warned me about 'synchronizing' issues but couldn't explain what that meant...

The TV package would be the Cox Advanced choice and I am thinking a Roamio Plus and a Mini.



Tivo Series 2 and Digital Adapter

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 02:01
I have TimeWarner in Southern California and I like my Series 2 Tivo. But they are going all digital so I needed the adapter (my TV is also not digital, but I don't think that matters).

They set it up so that the adapter feeds into the Tivo. I can record any one channel that the adapter is on, as long as the Tivo is on channel 3, but of course that is not how a Tivo is supposed to work. I'm hardly taking full advantage of the Tivo that way.

Is there any way I can actually have my old Tivo work as it's supposed to work with Time Warner once they go all digital?

Roamio Basic Video Freezing

TiVoCommunity Forum Recent Threads - Thu, 07/31/2014 - 01:02
So I have been noticing over the last week or so that some video recordings or even live video on my Roamio will freeze or basically pause and shudder and sometimes I can hit rewind or fast forward and it might continue playing fine or it might freeze up again. And sometimes I can hit rewind or back or try and get the menu up after the video has paused/froze and it's like the whole DVR is froze up and it stops responding for 5 or 10 seconds then is fine again and it speeds though all the things I have pushed and becomes fully responsive again. This only happens after a video pause/freeze. I try to again play the video recording and it might play fine for a few seconds and then do the same thing or it might act just fine and finish playing with no issues. But it's completely random and doesn't seem to matter what station it was recorded from. I have 2 minis and when the video pauses or freezes on the mini like the Roamio it errors out and says it has lost connection to the main Roamio but I can go to another video and it plays fine and then go back to the one that froze up and it plays with no problem or it still will freeze. It all seems very random but it all seems to have something to do with the Roamio freezing up and it all started after the summer update BTW I have tried to reboot all of them and the issue continues. Is anyone else having this problem?

Big Brother OAD 7/30/2014 - Veto

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 23:24
Wow. That's all I have to say about Caleb.

I thought Devin was delusional, but Caleb is 100x worse.

Zach is a total idiot and he needs to come out of the closet and accept who he is. Not that there's anything wrong with it.

I'm glad they didn't give the $5k to Team America. That wasn't an argument, it was a rant.

MoCA Networking/Splitter Type

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 21:16
The house I'm moving into has splitters that are rated 5-1000MHz. In the various online material I've come across on the issue, MoCA can range into about 1.6GHz. Would I need to replace the splitters that I have now or will the ones rated 1000MHz really be ok?

Got summer update, now have V53 error on many premium channels

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 21:08
Was greeted yesterday when i turned on my Roamio with the boot up animation and a message telling me my device had been upgraded. Since the update many of my premium channels are showing a floating V53 error. Please note every one of these V53 channels worked perfectly for the last 8 months I have had the Roamio. It all started after the summer update.

I tried all the usual fixes:

-Rebooted the Roamio
-Rebooted the tuning adapter
-Cox sent refresh signals
-Cox re-paired the cable card

Nothing made any difference and I am at wits end. Ideas?

Premiere Elite keeps rebooting

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 20:54
When I turned my TV on today I was greeted by the welcome screen. It was stuck there so I unplugged to force a reboot. After successfully restarting, I pressed Live TV which triggered a restart. Pressing Guide or navigating to a recorded show and pressing Play also results in a restart. I can navigate the settings menus without any restarts.

I also notice that just after the TiVo Central screen appears a message displays briefly in the live TV window stating "Press Zoom". When I pressed Zoom a message appeared briefly that said something about a service interruption, but then it restarted again. Just before it restarts the screen goes black except for the live TV window which remains visible and functioning for a few seconds.

I still have 20.4.1. I use the HD UI. Any ideas?

Finding and Watching past episodes of current shows

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 19:14
Question of the day.... I want to find some earlier episodes of shows i like...ie. Endeavor on PBS. With old Fios.. I could find On Demand for free.
Does Tivo offer anything like that? Or do i need Netflicks or Hulu?


Network currently unavailable - NO IT ISN'T!

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 18:44
Our system went through the update successfully the other day (or so I assume). Everything seems to be working fine except Video on Demand. When I click on it, I get "The network is currently unavailable....." message. This has been going on for a couple days and we haven't been able to access VoD at all.

I've used the prompts to check everything - network settings, diagnostics, connecting to the internet, and everything is fine. It shows we are connected.

I've restarted the system a couple times and I still get the same message. Nothing has changed in our house. We have the same broadband connection we have always had, no problems, no service issues, nothing. We haven't touched our Tivo unit or any of the cords that connect it.

Any ideas on how to fix this? Thanks!


Simple Universal Remotes?

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 18:28
Hey all! I've been doing a bit of research about universal remotes but they seem to either have way too many features that I'd never use or "simple" ones that have horrid reviews.

I'd simply like to control my Visio Smart TV (including the input sources), my TiVO Premiere, and a Roku.

I'll probably stick with Harmony remotes. The Smart Control looks awesome but I'd never use a device as the remote which makes it seem overpriced for what I need. The 350 seems perfect but the reviews are horrid.

One thing that perplexes me -- with a universal remote, when you want to watch Netflix for example, do you program the remote to use TiVO's Netflix instead of the Smart TV and Roku's Netflix apps?

I just want a remote itself to control the 3 devices that I don't need to pay for extra features like controlling it via a smartphone.

TiVo Crafts ‘Embedded’ Switched Digital Video Tech

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 17:55
This is the first time I head about this, and some "know-it-all" on this forum made the statement that it could not be done. I for one will be the first in line if/when TiVo release a retail box.


Ghost Entry in Recently Deleted

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 16:13
Not a big deal, but still........ I'm a neat freak and like to delete items in the "recently deleted" folder (I realize it isn't necessary). There is a "ghost entry" in the folder - it's empty, but says there is one item left. Rebooting doesn't fix it. Any thoughts? Thanks.

Roamio Basic - Rewind Stalls

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 14:31
When playing a recorded show, and trying to back up a show after skipping a commercial, the rewind stops, even going to 2x is slow and then it jumps.

On my old HD this always worked smoothly.

free not working model:TCD652160

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 13:59
this tivo worked great til a recent storm. i think it got hit by lightning. we had to buy a new one so before we throw this one out i thought i we give it away to someone who might be able to use the parts. the only price i am asking is postage. please respond before monday's garbage pick up. 2014-08-04 thanks

ads make ie9 refresh constantly

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 11:26
Yesterday for a while, and again now, when I browse to TCF in IE9 the pages keep refreshing at least once per second, making it impossible to do any navigating on the site. This doesn't happen on Google Chrome or with Safari. (I had to use Safari to even post this.)

I know it seems inexplicable to some readers but I like to use IE as my default browser on my PC. :o I was using IE10 (my OS is Win7 pro, 64bit) but had to revert to IE9 to solve an issue with PlayOn. That was months ago and this refresh problem just started happening yesterday.

Also, I've tried many other websites that include ads that change and only the TCF website gives me this problem. I've disabled the shockwave flash add-on in case that is pertinent.

Any suggestions would be appreciated. Is there something I can do on adSense to fix this?

Roamio 4 tuner with extended warrenty available

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 10:21
Same as I have posted in the buy sell section, I have it listed on eBay just have a day left and so far it's at $127, heck of a deal for a practicly new TiVo Roamio with grandfathered $9.95 monthly rate with no service commitment.

Let me know if the link doesn't work, I'm posting this from my phone.


TiVo TCD140060 vs TCD240080

TiVoCommunity Forum Recent Threads - Wed, 07/30/2014 - 09:31
My TCD140060 seems to have a bad power supply. I can buy a TCD240080 for less than a new power supply though the TCD240080 has a bad hard drive. Can I use the drive from the TCD140060 in the TCD240080?


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