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Hi with all cables disconnected from the smps except for mains in can I still measure VA and VS

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  • Robert Burlin Dec 08, 2014

    Hi mark nolan, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?

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SOURCE: I have a samsung hp-t5064 with sound and no

Yes,but did u resolders all CRT video board sockets pins connected to the video board and FBT-the highvoltage Flyback tranformer too?Resolders the CRT Guns Yoke connections to the main board too?Resolders all these places,So u should have voltages and high voltages going in to the CRT-tv Tube itself.

Posted on Dec 15, 2010

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SOURCE: How many fuses on smps power supply?

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
BN power supply schematics are given.

Posted on Mar 10, 2015

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1 Answer

Samsung plasma tv no vs or va voltage


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Sep 26, 2016 | Samsung Televison & Video

1 Answer

Hi i have a samsung plasma tv Model:pn51e530a3f what do i do if i have no power goin to the console yet i have just installed a new power control board. No vs or va readings r present


You might of bought a board that you don't need. This is what you do. Remove the power cord. Disconnect the cable that connects the power board to the main board from the main board. Also disconnect the cable that the connects the main board and the logic board from the main board. Now you want to jump pin 1 to pin 3 on the cable that goes to the power board. Look at the logic board. Do you see a set of pins on the board 1-4 or 1-6? You want to jump the 2 highest pins togeather. After you have done this, plug in the ac cord. Do you get colored patterns? If you do, replace tha main board. If you do not, check your VA and VS voltage while the set is running. More than likely you VS is missing. That tells you that your Y sus, Upper or Lower Y buffer or panel is shorted. I hope this helps.

Apr 08, 2016 | Samsung Televison & Video

1 Answer

How many fuses on smps power supply?


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
BN power supply schematics are given.

Mar 10, 2015 | Televison & Video

1 Answer

Im wondering if the logic board may be the issue


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Jan 20, 2015 | RCA 42PA30RQ 42 Class Plasma TV - 1024 x...

1 Answer

Hitachi P55H4011 No Picture & No Sound


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Dec 21, 2014 | Hitachi Televison & Video

1 Answer

I have a samsung hp-t5064 with sound and no picture. I purchased a service manual and went through the check list of solving the problem. It tells you to remove 4 plugs from the SMPS board (cn810, cn809,...


Yes,but did u resolders all CRT video board sockets pins connected to the video board and FBT-the highvoltage Flyback tranformer too?Resolders the CRT Guns Yoke connections to the main board too?Resolders all these places,So u should have voltages and high voltages going in to the CRT-tv Tube itself.

Dec 15, 2010 | Samsung Televison & Video

1 Answer

No picture have sound hp t5064


I have a samsung hp-t5064 with sound and no picture. I purchased a service manual and went through the check list of solving the problem. It tells you to remove 4 plugs from the SMPS board (cn810, cn809, cn808, cn807) and you should get dc voltages at test pin (Vs 207VDC) and test pin (Va 63VDC). If you do not get these voltages at these two pins you should replace the SMPS borad. My question is when all plugs are unpluged I get Vs 0VDC and Va 63VDC but when I start plugging in the plugs one by one nothing changes as far as voltages until I plug in the CN807 Main board and the voltages are at normal Vs207VDC and Va 63VDC. I am asuming the SMPS board is bad. Would I be correct?

Oct 23, 2010 | Samsung HP-T5064 50 in. Plasma HDTV

1 Answer

42 in magnavox plasma tv has sound with no picture I unplugged tv and waited 10 minutes with no luck


Hi my name is Roety,
I can help you with your issue ,
If you have no TV menu either check for any swollen capacitors on the power supply.
If none are found measuring voltages will localize the defective board or boards the voltage test points are marked VA and VS on the panel and boards.
If disconnecting boards restores these voltages the suspected boards must be replaced .
Tech labor is about $250 plus parts.
Suspected boards
power supply
Y sus main & Y buffers  
Logic board
mainboard
panel
 
 
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap
Thanks

Dec 30, 2009 | HP PL4245N 42 in. HD-Ready Plasma...

1 Answer

Picture has specs thru it also black on bottom and lines running left to right.


Check the flex cables on the buffer boards. be sure to disconnect power supply from the sustsin boards before removing cables.If not panel is bad. Check VA and VS voltages. The voltages are listed on the panel back. Measure on the connector of the power supply. Adj are on the power board. Measure with respect to ground. Be sure all connectors are reconnected before power is turned on.

Sep 11, 2009 | Samsung HP-R5052 50 in. Plasma HDTV

1 Answer

LG 50px4dr plasma tv turns off immediately after turning on. There is a red light that comes on rather than a green light.


The problem could come from the power supply at the first suspected one. If you have a knowledge of trouble shooting, open the cover then examine if any caps there look poping up. Use your finger touch on the top of caps you will feel it. If not, check all the fuses there then disconnect all the cables from power sup to other boards, except the main board. Check Va and Vs according to the label attached on the back of panel. If the power sup shut down, replace it with a new one. Hope it helps.

Aug 12, 2009 | LG 50PX4DR 50 in. Plasma TV

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