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  1. #53
    Join Date
    Jun 2001
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    Moore, Oklahoma, United States
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    Quote Originally Posted by LKJoel View Post
    X10

    Your biggest leg up in this trade will be electricity
    As a relatively new HVAC tech I'm glad this is the case. I did TV and Appliance repair for years, plenty of electrical experiences. I've found a lot of the electrical knowledge transfers easily.

  2. #54
    Join Date
    Nov 2006
    Location
    Southeastern Pa
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    Quote Originally Posted by 54regcab View Post
    As a relatively new HVAC tech I'm glad this is the case. I did TV and Appliance repair for years, plenty of electrical experiences. I've found a lot of the electrical knowledge transfers easily.
    Aside from the "knowledge" aspect, which is important, there is the experience of logical thinking to find a failure as a cause for a lack of function. There are few better learning experiences than working with power supplies, tracing signal pathways, and repairing PC boards.

    With our current school system, it is easy to see why we have "low information voters," but you can't be competent if you allow yourself to be a "low information technician."
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  3. #55
    Join Date
    Jun 2001
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    Moore, Oklahoma, United States
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    Quote Originally Posted by timebuilder View Post
    Aside from the "knowledge" aspect, which is important, there is the experience of logical thinking to find a failure as a cause for a lack of function. There are few better learning experiences than working with power supplies, tracing signal pathways, and repairing PC boards.

    With our current school system, it is easy to see why we have "low information voters," but you can't be competent if you allow yourself to be a "low information technician."
    Electrically I've found most HVAC units are similar to an appliance. The bugger about it is the HVAC "appliance" is split into 3 pieces and you can't normally be at all 3 at once for troubleshooting. Interconnecting wiring can be spliced or damaged. Intermittent problems are fun since they tend to happen when you AREN'T there. With a TV you could load it up and let it run at the shop until it failed.

    I do love that most HVAC units are 24V controlled and the input is either on or off. No "signals" to trace down, just 24v. Even the controls inside the units are often 24v, makes troubleshooting easier. Power supply is a simple old school transformer, no SMPS to troubleshoot. I think HVAC is the lone "hold out" on not switching to SMPS like just about every other device that uses standby power has.

  4. #56
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    Nov 2006
    Location
    Southeastern Pa
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    Oh, it WILL happen.

    Think about the IQ units. More electronics than a Zenith console!!!
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  5. #57
    Join Date
    Jun 2001
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    Moore, Oklahoma, United States
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    Quote Originally Posted by timebuilder View Post
    Oh, it WILL happen.

    Think about the IQ units. More electronics than a Zenith console!!!
    I've already seen it on some of the higher end units. However, not many are sold in our area, most people buy the cheapest system they can. I welcome high end/communicating systems IF they are designed well. It's the way of the future and I suspect communicating equipment will be required for the next round of EPA SEER mandates, just like TXV is almost required to meet SEER requirements now.

  6. #58
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    Nov 2006
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    Southeastern Pa
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    At least, with the Zenith, we just replaced the whole board, lol!
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  7. #59
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    Jun 2001
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    Moore, Oklahoma, United States
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    Quote Originally Posted by timebuilder View Post
    At least, with the Zenith, we just replaced the whole board, lol!
    On the newer TV's they have gone back to board replacement. Boards have become somewhat affordable again. Problem is that TV's have gone down in price so much that it's hard to make any money fixing them, even with cheaper boards. Warranty work is almost always a board replacement, and there are only 2 or 3 in most LCD/LED TV's. Power supply, signal board, and screen, that's the whole TV.

  8. #60
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    Nov 2006
    Location
    Southeastern Pa
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    I got halfway through a tractor trailer of RCA TVs in 1994, then Thompson pulled the plug because they didn't even want to pay for the picture tube replacement, so the rest were shipped back to some warehouse in NJ.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  9. #61
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    Jun 2001
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    Moore, Oklahoma, United States
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    Picture tube replacements got to be a real PITA when TV's started getting into the 32"+ sizes. The only CRT replacements we did were warranty jobs or used CRT's. New CRT's were too expensive to justify replacement.

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