Question about Samsung Pn50a450 Pn50a450p1dxza 50" 720p Hd Plasma For Repair Or Parts
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Posted on Jan 02, 2017
SOURCE: Samsung sp-p4231
This is how I approach this problem: I check for menu appearing on the screen: If it has menu, I look at connections. If it does not have menu then I check voltages from the power supply. I check for the following voltages. VSCAN, VS, VE, VSET and VA. If only one voltage is there, then, the PCB that needs to be replaced is normally the SMPS and/or the Logic. If all the voltages are there, the Digital PCB should be replaced. If it is missing one voltage, I disconnect the Y Main and X Main from the power supply and check if the voltage reappears. This symptom is normally caused by one of these two boards having a short on the missing voltage line. The defective PCB and/or the Power Supply (SMPS) need to be replaced. If you are in need of a technician, contact Samsung at: 1-800-SAMSUNG If you have any other questions, reply to this post and I will respond.
Posted on Sep 23, 2007
SOURCE: I HAVE A SAMSUNG LN46A550P3FXZA
There are many tips already on how to replace the capacitors in these units. In your case it will probably be CM852 and CM853 on the Power supply board. They should say 1000uF at 10Volts on both.
Posted on Oct 12, 2010
SOURCE: samsung 50
I have the same problem. No video just audio.
No on screen display visible either (volume, channel labels) nothing.
Samsung tried to repair this under warranty TWICE within 2 months. Second time they replaced circuit board and it worked for another 8 months. So I paid $1.500 for a TV that died again after 1,5 year - this is ridiculous.
I have no idea what the reason might be and I wont try to fix this since samsung tech could not fix it without replacing circuit board.
Posted on Nov 16, 2010
Tips for a great answer:
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Visit the site named 'Electro-help' for more details. Check this link and select the site named above. View it in 'Flip card' option, which can be selected from the drop down box menu by the [Sidebar] tag, at the left top left corner of the display window. It will make search easy. Some times, the ads attached with each posts both at the right and bottom, might help you to find the availability of spare parts. There are more than 640 posts to different brand TVs now. Will be updated daily. Faults to Samaung Plasma TVs are given in detail.
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