SOURCE: Toshiba 52HM95 52
your on the wrong input or your connections are not right. double ceck both
SOURCE: I have a 2001 model # 50A61 52" Toshiba TV. I was
the pop was the sound made by an electrolytic capacitor exploding. Yes, the tv is fixable, all depends on what other parts were damaged when the capacitor failed the big way. Worst case scenario - the entire power board will gonna have to be replaced: $350 board and labor. But on a tv this old all the other components have aged so it might be just the first one of an long line of failures.
If you have the money, just get a new, better tv, it will be cheaper in the long run.
SOURCE: lost picture is there a lamp or bulb on 52XV54OU model
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.
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