Hey all, I have a Vizio P50HDTV10A that I recently acquired. The previous owner said he was watching it and it popped and wouldn't turn back on. I cracked it open and found no blown or bulging caps anywhere. I checked the 8a ceramic fuse and it was open. I did not have another 8A so i popped in a 4A glass and the set fired right up and all the voltages were accurate. I proceeded to watch Netflix for about 5 hours before the 4 amp fuse let go. I have the correct fuse on order. My question is would it be wise to recap the power supply before I put the TV back in service? I dont know what caused the original fuse to blow and I know this model has a habit of popping power supplies and Y boards. Any thoughts?
-
-
Re: Vizio P50HDTV10A blew fuse
If your set has an LG panel and components with PSU # aax30284301 And depending on age/usage there should be 8 or 9 caps on the PSU that will go bad.
I have a 2007 Vizio P50HDtv10a that has LG stuff. Got to where it would take many attempts to power on, 8 bloated caps on PSU. Changed all caps on PSU to good quality ones and no more problems. -
Re: Vizio P50HDTV10A blew fuse
Thanks MagicSmoke. Mine is a late 2006 with LG panel and internals as well. Do you remember which ones were problematic? I count 25 Caps, not including the giant ones, on the power supply board. Im thinking about just replacing them all.Comment
-
Re: Vizio P50HDTV10A blew fuse
The ones that bloated on mine were 3300uf 10v capxcon iirc. I replaced all of the low voltage caps on the PSU just to be on the safe side.
The large high volt caps hardly ever fail. Not saying they can't, I just have not found one yet.
The small ones are all the same age hour wise and they are fairly cheap.Comment
-
Re: Vizio P50HDTV10A blew fuse
I replaced every cap on the power supply and put it all back together. I think I may have found my root cause. The AC power connector had an extremely loose wire. It has red, blue, and green wires that are connected to the AC input using solderless terminals. The blue wires female quick disconnect was loose and the clear rubber insulation boot was blackened and melted. I replaced the terminal and cleaned the male side as well. The set has been working great for the past 10 hours of straight netflix use by my kids.
My only issue now is there are occasionally some red spots when the screen gets full bright. I read that this could be solved with a voltage adjustment. It did not do this prior to recapping. I verified all of the caps were the same values as the ones I removed. Any help or insight would be great. Thanks again!Comment
-
Re: Vizio P50HDTV10A blew fuse
It's a good practice after a recap to check and adjust VA, VS, VE and Vscn to what panel sticker indicates.
There are adjustment pots on PSU for VA & VS, X board will have adjust for VE and Y should have one for Vscn.
Start with VS & VA then VE and Vscn there will be test point indicators for each voltage, they are not always close to adjustment pot.
EDIT I try to do the adjustments an a white screen or static display as this draws the most amps from the PSU.Last edited by MagicSmoke; 01-03-2015, 05:20 PM.Comment
-
Re: Vizio P50HDTV10A blew fuse
I will get those adjusted tonight. Thanks for the info!Comment
-
Re: Vizio P50HDTV10A blew fuse
All of the voltages were within .5vComment
-
Re: Vizio P50HDTV10A blew fuse
Do a search for YFR and YRR adjustments. These seem to help with sparklies.Comment
-
Vizio PSLL241206M inside an M55-E0.
Here's an odd one. Why in the world do I have 76 VAC on the fuse when I have measured 115 VAC on the input power cord? Does this point to something known or simply another SMPS problem I need to run down?...02-20-2024, 12:18 PM -
Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hi guys,
I'm inexperienced with electronics repairs, I've done a little bit of soldering caps and whatnot, but i have a blown fuse on this mimaki printer I got which I have bought a replacement for.
How do I remove this type of fuse (see picture)...it kinda looks like it would pull out of that bracket but it didn't come at first pull and I didn't want to brute force it incase it's soldered on there like most of the rest of the components.
Anybody know how to remove this type of fuse?
(The fuse is toward the bottom of the image labeled F2)...
Comment