Re: Samsung Plasma TV model PN64F8500 power on issue

Problem fixed. Please refer to the avsforum to see my repair.

Re: Samsung Plasma TV model PN64F8500 power on issue



About 5-15 minutes....

Re: Samsung Plasma TV model PN64F8500 power on issue

After having the tv fail I was able to perform the tests once again. This time they are much closer to the expected results in the samsung service bulletin. I obtained a SVC_VS of 209 which slowly declined while boot up. I then proceeded to test VSCAN where I measured -140 but it declined in absolute value to 0. I have ordered the caps and will report more results once I swap them out. I will document the process for the benefit of the community. The bulletin suggests to tack-solder the new caps. What exactly does that mean?

Re: Samsung Plasma TV model PN64F8500 power on issue

Thanks to talb over at AVSForum for providing the attached file. The issue described is similar to what I am experiencing. I did both tests described. I checked the voltage at SVC_VS and VSCAN and I saw 209 and -195.1 respectively. They are very close. Now it does say to test this at start up which I am not certain how long start up takes being behind the tv. Also I tested these values while the TV was working fine. I think I should wait for it to fail again. Unfortunately (or fortunately I should say) the issue is very sporadic....

Re: Samsung Plasma TV model PN64F8500 power on issue



Thanks dick for responding. I'm not an expert here so please be patient with me, but as far as checking solder joints do I just check that the color of the solder is bright and shiny? As far as caps on the psu, how do I perform this check? Please don't tell me I have to remove them all to check them!!!! I think I will do more harm than good if that's the case....

Re: Samsung Plasma TV model PN64F8500 power on issue

I have taken the back off and taken pictures of the boards. I even took a picture of the 3 capacitors being reported as problematic on AVSForum. All the caps look visually sound. Any ideas?...

Re: ESR Meter

I'm also in the market for an ESR meter. Any reviews on these that caught my attention?
[URL="http://www.ebay.com/itm/MESR-100-ESR-Capacitance-Ohm-Meter-Professional-Measuring-Resistance-Black-S59Y-/291575836211?hash=item43e3462e33:g:HZIAAOSwiLdWCRJ~"]http://www.ebay.com/itm/MESR-100-ESR-Capacitance-Ohm-Meter-Professional-Measuring-Resistance-Black-S59Y-/291575836211?hash=item43e3462e33:g:HZIAAOSwiLdWCRJ~[/URL]

[URL="http://www.ebay.com/itm/Precise-ESR-V5-LRC-Internal-Resistance-Meter-Test-In-Circuit-Capacitor-Tester/1317751872...

Hi. I am new to this forum so I would like to thank everyone on this board for helping the community and enabling those that like to fix things while keeping our landfills a little emptier. Also my apologies to not adding pictures yet as I have not started the project. I will definitely post as it progresses and if anyone needs them to help me diagnose the problem. Please don't skip my thread just because I haven't posted pictures yet.

So I have the TV in the subject and there are times when it doesn't turn on. The red light blinks on the panel (I believe 14 times at first slow...

Re: New Members - please post your introductions here

Hi...what a great forum and love the hilarious name. I guess bad capacitors a phenomena.