20 Most Recent Toshiba 50HP66 50 in. Plasma Television Questions & Answers

I got the red dots really bad on my toshiba 50hp66 after an hour or two of watching tv. I found out that if you open up the tv in the back on the left you will find two adjustment pots labelled Vsc and Vy. I took a sharpie and marked where the factory defaults were first. Then I adjusted the Vy pot down a little bit and the red spots were gone! My tv looks great again!

Regardless of what the satellite company says, I would find a way to try another satellite reciever to start with. I have seen this from cable boxes and satellite recievers many times. I have also seen this with a bad LNB, distribution amplifier, or a bad active splitter, or a bad cable, or a bad connector.

There is a data loss somewhere, and the set is seeing what we call aliasing. This is a loss of data, and it shows as blocks.

It is possible for your set have internal aliasing if there is a fault on one of the processor boards. The only way you will easily know if the problem is external or internal to the set is to try another source.

From your description, if other sources work with the set, then this strongly rules out the set. To easily know if the fault is on the input that the sat reciever uses, if possible swap the position with the DVD player.

On the sat system, a defect in the reciever, the LNB, or any LNB splitters or a relay, or a bad connector, can also cause aliasing because of a signal loss.


Jerry G.

Fault to the main power supply regulator section. 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. 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.

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/ Line, faults & possible causes to both LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.

NO.

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. 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/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. or Check and replace the damaged component/s at its main board. Contact any service technician. If you wish to get some details; check the site linked here.

Contact the authorized service centre for Toshiba. 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.

This should help: http://blog.coppelltvrepair.com/2010/10/vertical-or-horizontal-color-lines-in.html Good luck!

is this on all inputs? just want to be sure to eliminate any source or input issues. Are all cable connectors between source & TV good.Possibly MAIN (I/O PCB) could be connecting cables between power & X/Y pcbs, cables between X?Y pcbs & buffers, cable between buffer pcbs & panel, possibly buffer pcbs,

Your TV need a through check-up. Contact the authorized service center for Toshiba. Gopakumar Gopalan Google

Contact the authorized service center for Toshiba, or any experienced service technician. Gopakumar Gopalan Google