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Looking for a board, TCD648250B

Discussion in 'TiVo Series3 HDTV DVRs' started by timhbtr53, May 25, 2014.

  1. timhbtr53

    timhbtr53 Grumpy Old Man

    307
    1
    Apr 24, 2014
    In the Deep...
    Tivo S3 TCD648250B main board that is unsubbed and working. If you have a S3 that has a dead power supply or bad hard drive with a good main board that you would like to sale please let me know. Thanks Tim.
     
  2. Jun 7, 2014 #2 of 13
    timhbtr53

    timhbtr53 Grumpy Old Man

    307
    1
    Apr 24, 2014
    In the Deep...
    Board found and unit is now fixed and subbed lifetime. This would be impossible without SMD rework station. Thanks for all the help I got from a few new friends. Now if I could close this post. Thanks everyone. Tim in baton rouge....
     
  3. Jun 7, 2014 #3 of 13
    HerronScott

    HerronScott Active Member

    2,741
    19
    Jan 1, 2002
    Staunton, VA
    What was bad on your mainboard (just curious)?

    Scott
     
  4. Jun 7, 2014 #4 of 13
    unitron

    unitron Active Member

    16,387
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    Apr 28, 2006
    semi-coastal NC
    Hope you remembered to transplant board into case with same TSN as crypto chip to avoid future confusion.
     
  5. Jun 7, 2014 #5 of 13
    poppagene

    poppagene User

    790
    0
    Dec 29, 2001
  6. Jun 9, 2014 #6 of 13
    timhbtr53

    timhbtr53 Grumpy Old Man

    307
    1
    Apr 24, 2014
    In the Deep...
    Herron, the board would not received any RF from cable or OTA. It had a broke cap when I got it "The person I got it from did not put a screw in the drive cage" and it removed a cap. I tried a new cap with no luck so I found a unsubed s3 for free in craigslist and got my SMD station and pulled the crypto chip out of the bad board and floated it on the new one and now every thing is 100%. And yes unitron I put it back in the first case so the TSN would be right, but thanks for the remainder. Now I have 5 WD drives that a friend sent me to change out a SMD chip on the controller board so I guess that will take up about 10 min's of my day. Once again thanks everyone for all the great info. Have a great week ahead I plan on staying in the A/C it's going to be in the upper 90's all week again.
     
  7. Jun 9, 2014 #7 of 13
    unitron

    unitron Active Member

    16,387
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    Apr 28, 2006
    semi-coastal NC
    We need to get you into the power supply repair business.
     
  8. timhbtr53

    timhbtr53 Grumpy Old Man

    307
    1
    Apr 24, 2014
    In the Deep...
    Unitron, IF you know of anyone that needs a caps replaced on power supply that does not feel comfortable doing it their self just get them to PM me and if they will pay shipping here and back and parts I will do it for them. I got all the equipment to take care of it. The last one I did took less then 15 min's. I can do SMD to replace caps on PCB. Two Weller soldering stations two hot air SMD rework stations plus all the other misc stuff oscilloscopes and other stuff "To much according to wife"... Now if I could get my hands on some schematics on the TiVo's that would be nice.
     
  9. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC
    Is it you or squint that lives in "Red Stick"?* :)

    'Cause he's offering to do the same thing as well.

    And that makes it nice to have more than one.

    But I figure the closer to home I can offer someone one of you, the more comfortable they'll be about the whole thing.

    Omikron (in Philly) from the other site which may not be named here just posted that he's getting out of doing power supplies, so that's the only "up north" source I knew about.

    *Baton Rouge, LA
     
  10. squint

    squint New Member

    846
    0
    Jun 15, 2008
    I'm in Sacramento, the armpit of the nation.

    I thought Omikron stopped servicing power supplies years ago and also ceased doing PROM mods.
     
  11. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC
    Turns out it's timhbtr53 who's cajun flavored, not you.

    But at least now I've "got a guy" on the Left Coast and another Down South to whom I can refer the people who want me to fix their supplies, in addition to the guy in Raleigh.

    I got Omikron hooked up with a member here about a year and half ago when she had to be in Philly for something else anyway, and that was the last I'd heard from him until he posted this the other day

    "Been getting a couple inquiries asking if I'm still doing this. I am, but I won't be re-ordering parts once I exhaust existing inventory of capacitors. I may even consider just selling off the capacitor kits if anyone wants to do the soldering themselves. :)

    Once I discontinue this service I will be making a post in this thread, so if you don't see me state otherwise, it's still active."

    in a thread "over there".
     
  12. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC
    I tried to answer your PM and got

    Invalid recipient username

    for whatever reason, so here's what I said:


    I'm not in the business, I just fix my own stuff.

    But I've had people contact me because of my posts here wanting me to fix their power supplies.

    I considered it, but I'm not really in a position to guarantee my work* or spare whatever model TiVo is needed for testing my work.

    *If there's one power supply out there with a component other than one of those caps that's going to go bad, I'm sure I'd get it to fix and it'd go bad just as soon as I returned the recapped unit to the customer and they put it back in their TiVo, which means I'd have to disassemble the thing, tracing circuits as I go, drawing up a schematic, and then analyze the whole thing to figure out what wasn't working and then hope it was something I could find a replacement for--for example, if the transformer went bad, I'm sure it was a custom design for that power supply model, and I doubt the company has any left in stock after all these years, so I'd have to find another supply to cannibalize.

    So I'm pleased when I can find someone who seems to know what they're doing to point these people towards.
     
  13. timhbtr53

    timhbtr53 Grumpy Old Man

    307
    1
    Apr 24, 2014
    In the Deep...
    I do the same thing, I will trace out as much as I can but sometimes some of the company's use off brand parts and you can't find any info on it you know its a cap but on some SMD they like to remove the numbers or better than that one that's burnt. Nothing like the smell of components burning in the morning.
     

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