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f.y.i. polaroid tla-04617c

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    #1

    f.y.i. polaroid tla-04617c

    Just fixed one of these today. Would power on for anywhere from 10 secs to 2 mins then powerdown. No led no 5v totally dead..

    The former owner replaced the power supply. The replacement unit had about 60% BAD SOLDER JOINTS!!! THe original unit is also full of bad solder as well. Im thinking thats probhably a common issue..

    So if you get one of these that powers on and off etc first check caps and then reflow every damn joint on the power supply.
    Last edited by cadillacman; 04-23-2011, 05:35 PM.
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    #2
    Re: f.y.i. polaroid tla-04617c

    Didn`t these have good caps in them? The ones I had were built pretty well.

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      #3
      Re: f.y.i. polaroid tla-04617c

      yeah actually i think they were saxmons or whatever.. but man, piss poor solder joints. I think these came out right when rohs complaice just got its start, frickin solder was horrid on this thing. Its amazing it ever worked.

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        #4
        Re: f.y.i. polaroid tla-04617c

        well i got this set back today. Its having power issues again.. ran fine for about 2 weeks and powered down one night. next morning no go.

        now when the power button is pressed you hear relays click and red led is on, then shuts back off, then back on i just get a cycling click, click, click untill i unplug it.

        gonna dig back into it tonight. Bummer i thought i had this issue licked.(well new issue but prolly on the supply)
        Last edited by cadillacman; 05-11-2011, 06:45 PM.

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          #5
          Re: f.y.i. polaroid tla-04617c

          Originally posted by cadillacman View Post
          yeah actually i think they were saxmons or whatever.
          Are these Samxon GF caps? These caps could have high ESR?
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            #6
            Re: f.y.i. polaroid tla-04617c

            i will find out tonight when i recap it and recheck for solder issues

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              #7
              Re: f.y.i. polaroid tla-04617c

              Does this unit have one of those IPOS150 power supply boards or something similar? Post a pic if you could.
              The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

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                #8
                Re: f.y.i. polaroid tla-04617c

                well i managed to break a leg flush on u2, a str w6252... im so mad at myself..

                so i tried reflowing some more, replaced the smaller caps i could access- no dice.
                my 5v was pulsing with the clicking, 12v pulsing with the clicking, there was a 24v i think and thats the only one that stayed stable.

                i checked over some diodes and xistors and found nothing dead shorted.

                so i decide to try the two small caps under this heat sink, and in the process forgot one of the legs of u2, and now its broke lol...

                i dont think i ever got a chance to snap pics the first time around, i dafinately will now just give me a few mins..
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                Last edited by cadillacman; 05-11-2011, 09:36 PM.

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