I just acquired the apparently notorious Toshiba 50HP66 and I think it appears to have the YSUS problem I've read about.
I was told it had no picture just flickering but sound worked.
I turned it on (don't have any input hooked up) and sure enough it flickers, has a full screen of snow but I did notice that there is picture since I see video input when it starts and volume when I hit the button, though this is in between the flickers and doesn't seem to be in the right place going by the manual I got online..
I tried disconnecting the power to the ZSUS and it doesn't seem to show anything (no flickering). I was going to disconnect the YSUS from the buffers but I only find a small multi-cable on the upper left of it. When I disconnect that it still flickers but there is also a white vertical multiple bands on the right half about 2/3 from the left of the screen. I don't know if that's how you disconnect it from the buffers since I can't find detailed info.
A few of the power caps on the upper left side of the PS board are slightly bulging and I think one is leaking (Dk Blue stain on top) I also noticed there's a spade lug sticking straight out of the PS board about half way down that has 30V printed in a black box right next to it. I assume it some sort of test point but it reads 5+V. The +5V power cable feeding the YSUS reads 5.2 so I think that's right.
Does anyone have a more detailed way for me to troubleshoot this thing?
Unfortunately all I have to test with is a multimeter anymore. (Coming out of 3rd time I've lost everything I owned. Don't ask)
I've messed around with electronics my whole life and fixed my Vizio 42" and Samsung 32" following clues on here.
Any help on what to check and where to look would be greatly appreciated.
Steve
I was told it had no picture just flickering but sound worked.
I turned it on (don't have any input hooked up) and sure enough it flickers, has a full screen of snow but I did notice that there is picture since I see video input when it starts and volume when I hit the button, though this is in between the flickers and doesn't seem to be in the right place going by the manual I got online..
I tried disconnecting the power to the ZSUS and it doesn't seem to show anything (no flickering). I was going to disconnect the YSUS from the buffers but I only find a small multi-cable on the upper left of it. When I disconnect that it still flickers but there is also a white vertical multiple bands on the right half about 2/3 from the left of the screen. I don't know if that's how you disconnect it from the buffers since I can't find detailed info.
A few of the power caps on the upper left side of the PS board are slightly bulging and I think one is leaking (Dk Blue stain on top) I also noticed there's a spade lug sticking straight out of the PS board about half way down that has 30V printed in a black box right next to it. I assume it some sort of test point but it reads 5+V. The +5V power cable feeding the YSUS reads 5.2 so I think that's right.
Does anyone have a more detailed way for me to troubleshoot this thing?
Unfortunately all I have to test with is a multimeter anymore. (Coming out of 3rd time I've lost everything I owned. Don't ask)
I've messed around with electronics my whole life and fixed my Vizio 42" and Samsung 32" following clues on here.
Any help on what to check and where to look would be greatly appreciated.
Steve
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