Sharp LC42a63m

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • stevenooi
    New Member
    • Jul 2012
    • 4
    • My
    #1

    Sharp LC42a63m

    Dear all forumers,
    I have a weird problem with the above says TV power supply.
    Its first cant on and i had able to change the SMPS controller DLA001D i replace it with L6598D and its work fine.
    But after the TV get warm Up, the relay will clicl and the power off it self.No green light at all. And its turn back on itself in a minit then off again.
    Can someone plsase advise me what should i do next or should i just change the PSU?
    thanks
    Happy troubleshooting
    Tags: None
    • JimmysTGP
      Member
      • May 2012
      • 45
      • US
      #2
      Re: Sharp LC42a63m

      It's almost sorda impossible to determine on exactly where the problem is located by the information given. First why was the SMPS needed to be replaced, was it totally Bad. Pictures of the back of TV helps us to determine closely on what to look for. I personally do not like to use other models of SMPS to fix a television. However in your case your one step ahead of the game by finding an alternative SMPS. Now again Pictures and Voltages can give us enough to help. BTW welcome to the forum.

        Comment

        • stevenooi
          New Member
          • Jul 2012
          • 4
          • My
          #3
          Re: Sharp LC42a63m

          Thanks you for your reply and info.
          i will try to snap a few pic and upload the reading soon.
          But what i know is when its work everything is working perfect. nothing seem to be wrong.Just when its get warm up then the power will cut off.It seem like something is short,and the relay click to cut off the power.But its on back in a min and the become more and more frequent in between.
          Did anyone who have this model service manual link please dont mind share me the link.Or can someone with elektro tanya acc please introduce me to join the page to find more info.

          once again Thanks a lot and happy trouble shooting.
          Happy troubleshooting

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Sharp LC42a63m

              Check all your soldering for cold or intermittent solder joints. Reseat all connectors.
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • jm1234
                  9V relay temperature 40C
                  by jm1234
                  Hi, I'm seeing one 9V relay having temperature 40C on its 9V (primary) side. Does that seem right? I switched 2 relays on that board and the temperature was the same (on the same position), so I'm sure it's not a faulty relay. I measured voltage on that relay and it was 9.5V DC, so that looks good. I don't see any other relay on that board having that kind of temperature and they have 9V on them too.
                  I thought maybe the transistor that is switching this relay keeps switching on/off, so I also checked for AC and there was almost none: 0.3V using mV range. No steady frequency was shown, but...
                  05-09-2024, 03:03 AM
                • edugimeno
                  Biomass Boiler not driving cleaner motor relay. ENERTRES BIOMASA BI-650
                  by edugimeno
                  Hi everyone!
                  I have this board that suddenly stopped supplying power to an output that drives an interchanger cleaner motor.
                  I checked while the board was in place with all wires attached and there's no AC voltage on the corresponding plug X5
                  This X5 is driven by fuse F8 (tested OK) which comes from the second orange relay
                  To make sure there are no charcoaled contacts inside the relay, I got a 24VDC power supply and got it ready to manually power up the coil side of these relays.
                  I respected the polarity, positive to cathode of protecting diode
                  So provided all...
                  04-18-2024, 01:15 PM
                • sam_sam_sam
                  Mitsubishi CNC switching power supply board dead / relay board bad diode failure
                  by sam_sam_sam
                  I was working on this CNC machine today found no keyboard functioning no control relay powering on
                  The screen powered on and was giving an operation error but the manual was not very clear about what the error exactly was but with a little bit of troubleshooting and finding out that the control relays not powering on and no keyboard functions we narrowed down to this one switching power supply which of course does not have any indicator LED light they are on the keyboard interface/relay controller board

                  Found shorted diodes on main controller relays there are 3 of them that...
                  01-07-2023, 05:43 PM
                • dkneyle
                  Onkyo DX-V500 Laser Disc Player - weird SMPS fault
                  by dkneyle
                  This relic from a technology path that came to a dead end (but still has historical interest) was brought in with a dead SMPS, which is based around a MK1210 device. I got it going after a battle. It seems to have a strange design - if it's not getting feedback that the secondary is OK it cause the big FET to go into full conduction and overloads resulting in a blown fuse at best or something worse! I'm using a Dim Bulb Tester (70W/230V) which thankfully has saved the day a number of times whilst repairing.

                  Now, it loads a CD OK. The motor voltage output (which is built onto the SMPS...
                  02-01-2022, 02:08 AM
                • shamsudeen
                  Hi, Can we use SMPS Bench Power Supply for Laptop troubleshooting?
                  by shamsudeen
                  Hi all, I just need to know that, can i use SMPS type power supply to test and short circuit detection on a laptop motherboard?
                  I saw 95% of repair guys are using only Linear bench power supply. linear bench power supply is pricy, thats why i planned to get one SMPS supply.

                  i know that in linear power supply the noise will be very low comparing to SMPS supply....
                  07-19-2025, 07:14 AM
                • Loading...
                • No more items.
                Working...