Toshiba 42HP66 42" Plasma TV had "Pop of Death" Sound but no image. I got the service manual online. I checked both the Ysus and Zsus drive boards. The Ysus was bad I obtained another and replaced it, now have image and video. Right side of the image is thin verrtical color bands, replaced the "control" board too with no change in the image. I haven't had time to dig into it much further. (I'm a tech and very busy) anyone else seen this particular problem?
SOURCE: Toshiba 42Hp66 No picture only sound
to test the zsus board check for a low resistance on the fuse to ground. sadly if the zsus is bad, the ysus and one or both of the driver boards is probably also bad. best to change all at once as a defective one can tacke out the others.
SOURCE: LG 50PX1D, YSUS and ZSUS board replacement
first thing that you can do is use the Google serch by just typing in lg 50px1d and see if you get any thing close to what you need.
SOURCE: Some troubleshooting help please.
The part that caused the fuse to blow is the hybrid that is mounted underneath the heatsink on the YSUS and ZSUS boards. The part used on these boards might be YPPD-J017C or YPPD-J018C, in about 90% of the time, replacing these hybrids fixes the plasmas with no video but good audio. Since VS and GND is shorted, that means that the hybrid has shorted internally. Most service techs would rather replace the entire YSUS or ZSUS boards since the hybrids are very difficult to remove.
Let me know if you require further assistance.
Testimonial: "Appreciate the good info and quick reply. THANKS VERY MUCH"
SOURCE: the tech said i need a ysus and a zsus board. what
You can check shopjimmy.com or discount-merchant.com or many distrub. sounds like you have no picture.
SOURCE: Tosbiba 42HP66 Plasma. Pop from set not very dim
Hello
First of all, check the power supply board for any damaged [bulged] capacitors in it. If there is such, power supply output voltage will be differet to that it should be. As there is a dull picture with your TV, the power supply section is workng, but if there is any fault capcitors in it, variation to output voltage can be occur. So check it first. If this is found ok, Zsus board should be suspected. If the panel has some trouble with it, that is, if there is any short within the panel, Zsus will get damaged, because high voltage to ionise the gas pixels of the plasma TV is being generated from this board.
Check the power supply board for any bulged or exploded electrolytic capcitors. Then go further, and replace the Zsus board. As there is a dim picture is there , X & Y boards are working well. OK.
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I replaced one of the two "buffer" circuit boards beneath the plasma panel that controls the right side of the screen, and the image was restored.
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