Sceptre x322bv-hd powers up w/sound-but no picture

[vinceroger69]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

is there a part number on this transformer?

[cbr6861]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

yup-
MIP320FL-T3 .... I can get one on ebay coming in from china.
Does this appear to be faulty?

[cbr6861]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

seems to me the coiling has been compromised somewhere in the winding

[budm]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

That is the high voltage winding, I expect to hear some arcing sound before it goes into shutdown mode. BTW, you need to use 2K Ohm range to check the resistance. It does look like it has been arcing.

[cbr6861]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

in the 2k range i get .000 on the secondary and nothing on the primary. on the 200 range i get 1.5 on the secondary and nothing on the primary.

[cbr6861]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

Just wanted to shoot an update this post. I went ahead and replaced the entire power board as a unit, although I'm pretty sure the high voltage winding as Budm mentioned was the culprit. Once installed...walla! I got backlight coming on, and once all put back together the set has been working since. I wanted to thank this awesome forum and specifically Budm & DGtech for jumping in to assist, couldn't have done it without you guys.

[budm]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

Thanks for the good news.

[androidmikey]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

Maybe an old thread, but I have a similar issue with a Sceptre I'm working on for a friend. Is anybody still there? I followed this thread and measured voltage output on the board and it's very close to what was in the pic here. The picture is so dark you can't see it unless you hold a flashlight up to the screen, but when you do the picture is fine (where you can actually see the light from the flashlight that is). Any ideas? New to this forum btw. Please be nice. ;-) I've gone to school to work on medical equipment, but I'm a little rusty and haven't worked on these types of units. Thanks in advance! The model is x322bv-hd.

[huckster24h]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

Anyone know the values for EC10 and EC14 in MIP320FL-2

[huckster24h]

Re: Sceptre x322bv-hd powers up w/sound-but no picture

For future reference... Glued down caps in MIP320FL-2:
EC10 - 220uf, 35V
EC14 - 10uf, 50V