Announcement

Collapse
No announcement yet.

The Bad, the Good, and The Ugly

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    The Bad, the Good, and The Ugly

    The Bad: A KDS K-22MDWB 22" widescreen LCD monitor. Offered as non-working on Craigslist for $15. Purchased it on August 13th, plugged it it, got an off-white screen with image fragments.
    Opened the monitor and checked the power supply. Found 4 obviously bad 680 uF 25 Volt caps by Xunda and 2 obviously bad 470 uF 25 Volt caps by Xunda. Other caps by Xunda were not obviously bad, but were replaced as a precaution.

    The Good. A total of 11 caps were replaced for a total price of approx. $5.50, including shipping. The order was placed on the 14th, the replacements arrived on the 17th (USPS First Class mail). After negotiating with my grandson (his computer is on my workbench), the caps were installed without incident, and the monitor reassembled. It is working perfectly.

    The Ugly. Approximately 3 months ago I had the opportunity to purchase a 37" JVC LCD HDTV for $70. It had similar symptoms, and I declined to purchase it.

    PlainBill
    For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

    Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.
    Tags: None
    #2
    Re: The Bad, the Good, and The Ugly

    yeah, 70 is too much to gamble on such a project. 15 is about right.
    sigpic

    (Insert witty quote here)

    Comment

      #3
      Re: The Bad, the Good, and The Ugly

      Consider yourself fortune. JVC uses decent caps, I have been in one of those JVC TVs.
      Means LCD or mainboard issues.

      Cheers, Wizard

      Comment

        #4
        Re: The Bad, the Good, and The Ugly

        Originally posted by Wizard
        Consider yourself fortune. JVC uses decent caps, I have been in one of those JVC TVs.
        Means LCD or mainboard issues.

        Cheers, Wizard
        Good to know. But a Samsung would offer potential, right?

        PlainBill
        For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

        Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

        Comment

          #5
          Re: The Bad, the Good, and The Ugly

          Samsung much better in potiential, due to more available parts. (few weeks ago fixed Samsung 2004 17" LCD monitor by replacing new microcontroller IC and it was 5 years old at that point). To show that you can still get parts especially with good brands.

          By the way, count out the RCA. JVC okay but expensive. Sanyo is still a problem with mainboards. I have dead sanyo 40" with junk mainboard that costs 500 to replace, and current 32" on the bench, trying to determine what failed, not under warranty either. (No menu, no text at all, just partial graphics, some inputs works, no tuning at all on cable/air (can't see numbers and no way of changing channels).

          For most parts anything that is afflicted with badcaps is fair game to fix and sometimes occasional bad regulator. (Case in point with Apple 2007 23" cinema HD display, bad generic 1117-3.3 regulator was outputting 4.0V, used a ST LM1117-3.3 IC now 3.2xxV, no badcaps at all due to quality build!). Other than that, apple guts is beauiful like nice screws, well formed metal parts, circuit boards, etc, DVI fed directly to the LCD panel itself, while small square board is for two hubs (firewire 400/USB and simple microcontroller and few voltages.) USB and firewire plugs all metal and fully EMI shielded right at the internal connectors to the mainboard!

          Cheers, Wizard

          Comment

          Previous template Next
          Working...
          X