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Discussion in 'TiVo Help Center' started by johnsom, Jul 25, 2011.
Instead of diagnosing your board and learning electronics just change the power supply. I assume yours is a life time unit. If the main board is dead, the unit is no good. It doesnt sound like your drive is the issue, so the only other piece you can really change is the power supply. I have a bunch of TivoHD parts, they are cheap. I am selling a board out of a TivoHD on ebay for $30. Cheaper than other people are selling them for just to get this stuff out of my house. It looks a little different than the boards in my other units and your board. But it really came out of a tivohd. Buy my board (or someone elses) try it. If that isnt the problem, put it back on ebay yourself and get your $30 back.
Power Supply for Tivo HD Series 3 TCD652160 DVR SPWR-00011-000 RevB0 | eBay
Sorry that I couldn't really be of more help but troubleshooting power supplies isn't something that I've done much of other than replacing the capacitors on our S3's and it doesn't help that I don't have one free with a power supply that I could check things on for you.
Were you able to get your issue resolved with a replacement?
Scott, yes, I picked one up before the suggestion was posted - in fact, I got a working unsubscribed S3 so I now have spare parts. The power supply is a different variant than the one in my original S3, but it works, albeit with a few bulging caps. I'll just replace those and go from there. Thanks for your help.
Glad to hear that you were able to get it back up with the replacement power supply!
Scott, where did you buy the caps?
Got mine from Mouser and Digikey
Sent from my iPad using Tapatalk
Digikey. Maybe I should go back and update that post.
Someone created this project list for mouser.com parts. Not too sure how good it is.
USE AT YOUR OWN RISK.
Project: S3 OLED TCD648250B PSU Caps:
Thanks, Scott. I'll check out Digikey.
What are the symptoms of bad power supply capacitors? My Series 3 just won't turn on sometimes, but works fine if I unplug and plug it back in. This am, it wouldn't work, snowy screen this time rather than blank, popping noise every few seconds. uplug, replug did the trick. Could this be the bad capacitor problem? Called TV tech support, waste of time.They said change the power cord. Plus they say I'm out of luck with my lifetime program since it goes with the specific box.
Sounds like the power supply to me.
TiVo Repair and Troubleshooting Guide: Problems and Solutions
Almost any symptom could be produced by bad power supply/capacitors. All the components are only specified to work in certain voltage ranges. If they expect 5V and you start giving them 4.2 Volts, they might fail to work at all, or they might put out bogus data, which then causes further issues, eventually percolating to a point your notice. If you get data corruption on the drive, that can cause other issues.
I've had systems that wouldn't boot. I've had boot loops. I've had CableCARD issues. I've had waves on analog outputs. I've had HDMI issues. All of them attributed to bad power. When the supply finally really dies then it is easy to see. The thing just won't turn on.