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Old 11-23-2011, 09:40 AM   #1
MOMLM
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Broken?

My TiVo HD died.... the lights on the front of the box no longer light up and it sounds like the hard drive is making a clicking noise about once a second. Do you think replacing the hard drive will bring it back to life? I have lifetime service on the box so I would like to get it up and running if possible.
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Old 11-23-2011, 10:07 AM   #2
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Replacing the hard drive MIGHT bring it back. The problem could also be the power supply, which can also be replaced.

From your description, it's hard to determine which component could be the problem.
First, open the Tivo (AFTER you unplug it) and look at the power supply. Pay attention to the cylindrical capacitors. They should all be completely flat on top. If any of them have a slight bulge, they're most likely bad.





You may have to end up replacing the hard drive AND the power supply. It would be worth it since your Tivo has lifetime on it.
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Old 11-24-2011, 02:04 AM   #3
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Originally Posted by MOMLM View Post
My TiVo HD died.... the lights on the front of the box no longer light up and it sounds like the hard drive is making a clicking noise about once a second. Do you think replacing the hard drive will bring it back to life? I have lifetime service on the box so I would like to get it up and running if possible.
That clicking noise could be the hard drive or could be the power supply turning on and off (ordinarily the power supply isn't supposed to make any noise).

And now that I think about it, the only way a bad hard drive (instead of a bad power supply) could cause your symptoms (no lights on the front before the motherboard even gets far enough into the boot process to check to see if there's a hard drive there--even if you took the hard drive out the front should light and your TV should show the initial "Welcome, starting up" screen, which is stored on the motherboard and not the drive) is if the drive had developed a short or near short and was causing the power supply's automatic protective circuit to shut it down, after which it would try to start again and shut down again.

The chances of that particular problem with the hard drive are very remote and the chances of your power supply being a victim of "capacitor disease", or, as wikipedia calls it, "capacitor plague", are much, much more likely, as it's been happening to Series 2 and Series 3 owners quite a bit lately (I've bought and repaired 2 myself this year, the most recent an HD).

Have you ever disassembled a piece of electronics gear?

How large a city do you live in? (wondering what parts and repair resources are availible to you)
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Old 11-24-2011, 02:06 AM   #4
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Quote:
Originally Posted by steve614 View Post
Replacing the hard drive MIGHT bring it back. The problem could also be the power supply, which can also be replaced.

From your description, it's hard to determine which component could be the problem.
First, open the Tivo (AFTER you unplug it) and look at the power supply. Pay attention to the cylindrical capacitors. They should all be completely flat on top. If any of them have a slight bulge, they're most likely bad.





You may have to end up replacing the hard drive AND the power supply. It would be worth it since your Tivo has lifetime on it.
That's a very good picture for showing people how subtle the difference can be. Nice find!
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Old 01-10-2012, 09:06 PM   #5
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Thanks for the GREAT information

I can't say how much I appreciate the diagnostic info in this thread. Here's my tale of woe -
I disconnected and moved my Tivo (Philips 704) to clean around it. The vent areas had a build-up of dust, so I vacuumed around them and reconnected it. The fan was spinning, but no power light on the front panel. To say my heart sank is a BIG understatement. Could I have done some ESD damage by vacuuming? I really thought I toasted the motherboard.
After searching the Help Center, I found this thread. It described the problem and I was relieved to learn that the fan could still be powered up when the power supply is failing.
When I opened the unit, I saw that one of the 2200 uf caps under the heat sink had the bulged top. The bulge wasn't huge - maybe 1/16 at the most, but the bulge was obvious when compared to the other caps.
I thought I saw burn marks on the 100 ohm resistor, but after desoldering it and checking it with a multimeter I realized it was some stray goop.
I ordered the caps from Mouser (Mouser p/n 667-EEU-FR1E222L, 2200 uf, 25VDC) and installed them tonight. It was a bit tricky to get the leads into the holes, but when I switched to holding them with a hemostat I had better control to line them up.
It was a happy moment when the power light came on and the 'Powering Up' screen appeared! For less than $20 (including shipping) I was able to get it repaired and restore peace to my home.
Thanks again for the pictures and advice.
Dave
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Old 01-10-2012, 10:53 PM   #6
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Thumbs up

Glad we could help. Don't be a stranger now.
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Old 02-07-2012, 06:43 AM   #7
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Bump to keep this picture handy.

Should make this thread a sticky.
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Old 02-29-2012, 02:17 PM   #8
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Bump because I just told someone to search for this thread to look at the picture.
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Old 03-23-2012, 11:44 AM   #9
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Another bump, same reason.
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Old 04-11-2012, 12:37 AM   #10
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Bump, again
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Old 06-23-2012, 02:37 PM   #11
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bump de bump bump, bump
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Old 07-02-2012, 10:12 PM   #12
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Remind me to ask a moderator to make this a sticky
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Old 08-06-2012, 09:10 AM   #13
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One more bump.
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Old 02-14-2013, 10:32 AM   #14
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So where can I find a list of caps for a TCD648250B?
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Old 02-14-2013, 10:55 AM   #15
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Quote:
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So where can I find a list of caps for a TCD648250B?
Have you consulted any of the other threads discussing power supply problems?
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Old 02-14-2013, 08:10 PM   #16
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Quote:
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So where can I find a list of caps for a TCD648250B?
Digikey list:

http://www.tivocommunity.com/tivo-vb...93#post9131293

Mouser project:

http://www.tivocommunity.com/tivo-vb...39#post9456839

https://www.mouser.com/ProjectManage...sID=1a42eea4c1

Scott
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Old 02-15-2013, 10:50 AM   #17
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Not that's what I'm talking about!
Thanks Scott.
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Old 02-26-2013, 10:25 AM   #18
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Thanks for this project Scott. Saved me some headaches ordering the caps, however I have problems with S2 power supply, 240040 model.

You wouldn't happen to have a "Project list for that ? I got mine fixed right now, but I have several other S2s both 240 and 540 series and would be nice to have a list of replacements. I got them listed at "S2 Power supply repair.

Thanks
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Old 02-27-2013, 06:10 AM   #19
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Sorry, we went straight from 2 Series 1 units to 2 Series 3 units so never had a Series 2 model. If you have the list of S2 capacitors with capacitance and voltage ratings, we should be able to identify suitable replacements though.

Scott
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