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Thread: Where to buy electric components to fix M998/HMMWV PCB boxes?

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    3 Star General TOBASH's Avatar
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    Default Where to buy electric components to fix M998/HMMWV PCB boxes?

    I need resistors and capacitors and 100amp relays and mosfets and such.

    Who are the players who sell these, and are there any site sponsors who sell this stuff?

    Where is Radio Shack now that I finally grew up and need them?
    T.O.B.A.S.H - When we feel frustrated with those around us. LOL


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    4 Star General NDT's Avatar
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    Newark is one vendor. Good luck, not having any luck diagnosing mine.

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    4 Star General Guyfang's Avatar
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    Mo0st of the generator guys buy from Mouser.

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    Even at it's peak Radio Shack would have let you down. A guy like you would have hit up Canal St 20 years ago but that's long gone. I've always had good luck with DigiKey and Mouser as my parts suppliers if I couldn't get them locally but Silicon Valley used to be a hot spot, now it's on the back burner with Canal St! Sad. It seems like everything comes from China even if it was originally made here in the States.

    You might want to check with Naomi Wu.

  5. The Following 2 Users Say Thank You to papakb For This Useful Post:

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    Quote Originally Posted by papakb View Post
    Even at it's peak Radio Shack would have let you down. A guy like you would have hit up Canal St 20 years ago but that's long gone. I've always had good luck with DigiKey and Mouser as my parts suppliers if I couldn't get them locally but Silicon Valley used to be a hot spot, now it's on the back burner with Canal St! Sad. It seems like everything comes from China even if it was originally made here in the States.

    You might want to check with Naomi Wu.
    Who are all these people and how do I get in touch?

    Mouser? Newark? Naomi Wu? DigiKey?

    What are the full names?

    And I don't mean to sound unthankfull... I thank you one and all.
    T.O.B.A.S.H - When we feel frustrated with those around us. LOL


    The Great Wall of China is regarded as one of the Seven Wonders of the World. What is wrong with The Greatest Country in The World building its own???

    1987 M1025 Slantback, 6.2 w/3 speed
    2017 Tesla Model X P100D
    2011 Tesla Roadster
    2003 Lifted Durango with steel bumpers
    1984 Toyota BJ-44 RHD
    Restoring 1975 Toyota Iron Pig

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    4 Star General Guyfang's Avatar
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    Just try the word mouser in you browser.

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    Naomi Wu is the Chinese electronics industry poster child. That's her in the middle.
    Attached Images Attached Images

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    Holy Cow. I dated her. She never mentioned.

    Guess when you got me you don’t need to think about electric.
    T.O.B.A.S.H - When we feel frustrated with those around us. LOL


    The Great Wall of China is regarded as one of the Seven Wonders of the World. What is wrong with The Greatest Country in The World building its own???

    1987 M1025 Slantback, 6.2 w/3 speed
    2017 Tesla Model X P100D
    2011 Tesla Roadster
    2003 Lifted Durango with steel bumpers
    1984 Toyota BJ-44 RHD
    Restoring 1975 Toyota Iron Pig

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    I tinkered around with electronics in HS. I was a roadie for a music store, we provided sound equipment for small clubs and larger venues for bands like Spooky Tooth, Humble Pie, Genesis, King Crimson, ELP, more. Fun times.

    I built several digital electronic gadgets, radios, Heathkit and Radio Shack things, am fairly competent with a soldering iron and circuit tracing.

    Fast forward about 40 years and I got interested in bass guitar playing and came across a smoking deal on a broken Acoustic Control Corp 18” reflex bass amp (370 watt). Found schematics, spent a month of evenings in my office replacing components, then reconed the speaker, recovered the amp, eventually lost interest in guitar (no real talent for it), sold amp at a good profit. There’s a whole collector’s crowd for antique ACC amps and sound gear. Thing was almost 40 yrs old when I sold it.

    This taught me a LOT about electronics I thought I knew decades earlier. Humbling. I basically knew nothing. But I did manage to get the thing working, even shipped it off to MadScienceWorks for calibration - I was off about ten ohms on one trim pot - which made me feel good. Buyer was happy.

    What I did basically was replace every electrolytic capacitor, put a set of YUGE electrolytic caps in there (about 2 farad, like you’d use in a car boombox), all the little ones on the boards, replaced power transistors and used silver heat conducting paste, replaced most of the preamp components, tightening up the resistor tolerances to 1% instead of the traditional 5, and so on. Figured a lot of those components wouldn’t have aged well, electrolytic caps are notorious for breaking down if they’re not used often, random static charges can fry FETs and I probably spent $100 on components through mouser.com and digikey. The famous, traditional, amplifier buzz even went away.

    If you know electronics, how to read resistors, have a schematic, VOM, oscilloscope, have at it. I’ve seen these boards, the schematics, and the only way I think I’d be comfortable reworking one is the same way I did the ACC 370 head. Change out anything that could be burned out, all the mosfets, SCRs, diodes (with higher reverse/peak voltages for a little extra insurance), and keep my fingers crossed I didn’t miss anything.

    But time, said Herr Doktor Einstein, is money.

    These days, I have other interests, hobbies, and I’m not half as hypomanic as I once was.

    I still have my original (with loud relays), replaced the box with the newer ESS/S4 (?) box3 years ago and bought a spare on sale ($400) about 18 mos ago, just to have it. Just in case.
    A day without rivnuts is like a day without a Humvee mod.

    MEP-802A TQG 04-2016
    1992
    M1038 W/W 6.2L NA 9-2016
    MEP-803a TQG 09-2018

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    Mouser Electronics www.mouser.com
    Newark Electronics www.newark.com
    Digikey Electronics www.digikey.com
    Allied Electronics www.alliedelec.com

    All of these are good choices. Some of it you might find at Mcmaster-Carr and their website is the best in my opinion.

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