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Old 06-14-2015, 01:36 PM   #1
friendly_jacek
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my HD upgrade and recap story (succesful)

hi,
i had my HD tivo since i bought it on clearance for myself on father's day in 2008, so for about 7 years. the unit was running almost non-stop since, so i decided it's time to upgrade HD and recap the power supply.

I purchased a 1TB WD green drive on a recent rebate deal on tigerdirect ($34 after rebate IIRC). the drive is WD10EZRX. I disabled the idle sleep 12.8s default by the wdidle3 /d routine. Hitachi tool for AAM didn't work. I used the following drive settings (jumpers 5-6, 7-8):




I used winMFS to format the new drive and did the the image transfer from the old drive. turns out it works with the USB3 SATA enclosure i recently bought on amazon ($20). so, i didn't have to instal the drive(s) internally.

the recap job was a bit more difficult. i did only one recap before (PC motherboard), and this was a bit more difficult, but still doable even without extensive experience.

my power supply was the same as posted here: http://tivocommunity.com/tivo-vb/sho...3#post10109233

i ordered an extended set of caps covering both possibilities and have some extra ones left. the OEM caps were of the following brands: Elite (the big 200V one), Ltec, and Teapo. they are all listed on the bad cap listing: http://shaddack.twibright.com/projects/badcaps/ but i also heard, they are not the worst.

they were all 105C grade and in good shape with no bulging and in correct capacity as far as i could test with my multimeter than only goes to 100uF.

i think that recap job was not necessary at this point, and maybe even harmful considering the sub-par soldering job i did (a possibility of dry joint down the road).

i'll keep you posted how it works long term, but so far it works great.

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Old 06-16-2015, 09:06 PM   #2
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You found it easier to replace caps on a multi-layer (probably plated-through holes) PC motherboard than on the single layer (copper on one side only so no plated-through holes) TiVo power supply circuit board?

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Old 06-16-2015, 11:22 PM   #3
friendly_jacek
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yeah, my desoldering iron didn't work well with the ROHS chit.

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Old 06-17-2015, 07:32 AM   #4
Chris Gerhard
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Good luck with the job, hope it lasts for many years. I am likely facing some similar repair work with my TiVoHDs running since 2008 and 2009 and I have purchased soldering equipment and will be ready to try, lacking the necessary skills unfortunately.

I have 2 HDTVs to try to repair now, down from 3 since the first repair was an easy power supply board replacement. It looks like I will have a chance to hone my soldering skills trying to repair the HDTVs, a 60" plasma and 46" LCD with boards that have failed.

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Old 06-18-2015, 06:01 AM   #5
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When unsoldering, some rosin flux brushed on first helps, or you can use regular rosin core lead/tin solder and melt some new stuff into the old stuff to encourage it to melt.

Some de-soldering braid (do not use the crap Radio Shack switched to a few years ago) comes in flux-coated versions as well, which can help.

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Old 06-24-2015, 08:03 PM   #6
timhbtr53
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If you use unsolder wick,

Quote:
Originally Posted by unitron View Post
When unsoldering, some rosin flux brushed on first helps, or you can use regular rosin core lead/tin solder and melt some new stuff into the old stuff to encourage it to melt.

Some de-soldering braid (do not use the crap Radio Shack switched to a few years ago) comes in flux-coated versions as well, which can help.
____________________________________________________________ _

It helps to dip it flux first unless it says flux coated unsoldering wick.

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Old 06-25-2015, 12:21 AM   #7
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Quote:
Originally Posted by timhbtr53 View Post
____________________________________________________________ _

It helps to dip it flux first unless it says flux coated unsoldering wick.
You know us old guys don't get to dip our wicks all that often anymore.


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