Re: Vizio VW42LFHDTV10...Brother Mikes TV...
why did you replace the fuse in the first place? was it bad?
why did you replace the fuse in the first place? was it bad?
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
I have no equipment to check wheather the fuse was the culprit or not so I decided to give it a shot.Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
What has been done so far with your set has all been done without using a meter to check a fuse? You've replaced the main board with no success. The wasted money and wasted time could have been avoided if you would have posted pictures of what you had in the first place. We could have told you where to find the proper fuse and then we would go on from there. Now you are backtracking saying that the fuse wasn't really secure?
Post pictures of the whole set and then post pics of the individual boards, including the master and slave inverter boards (if any, would be on the right and left side under a cover).The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
I have not changed the mainboard yet DGtech. Still waiting for its arrival. The only difference in the fuse I replaced was the pigtail part (mounting). Yes I will have to get a meter. I want to check the caps and regulators. Hopefully my situation is the same as King's and I can follow his steps. This way I can return the main board I orderd.Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
The mainboard I ordered finally arrived. The components and numbers all matched on both boards pefectly. The only exception being the middle numbers 0472 and 0502. Other than that... same exact board. So I switched the boards out and still same problem. I believe, that eliminates the mainboard as the culprit. I placed my tv in a pitch black room as suggested and turned it on. No light what so ever besides the Vizio logo. With the lights being off I am asuming that it is not the TCON and leaning 100% toward the inverters as the culprit. Will check them out tomorrow and post findings. If so, is there a way to repair the inverters? Or , would I have to have them replaced?Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Found the culprit!!
After careful inspection found one of the pins fried on the Master inverter. I believe it is MU1. It has 16 pins on both sides. Now, where to get the part... anyone?
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
yep, If there is no backlight, you needed to check the 24v line coming from the power supply and if you have 24v there, you can pretty much bet its in the inverter.Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
100% sure its the master inverter.. anyone know where to get the MU1 integrated circuit?Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Never mind. Just picked up the part.
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For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Fortunately yes. Instead of looking for all of them individually I just purchased the already assembled kit from ebay. 15 bucks ... sure why not.Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
I'm surprised you didnt just replace the board. I've replace this chip several times on different sets. It's a task that I wouldn't suggest taking on unless you're a pro at soldering.
What is the numbers on the inverter board you are fixing??The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Yes I know those pins are extremely small but if i succeed I will be feeling very good about the work ive done and $ I have saved. I bought this tv fried and sofar I have spent on a fuse, a restock fee, and the circuit/transistor kit.
If I fail I wont be feeling bad about buying the master or having someone solder those pesky pins. Besides I have done plentyof smd's no problem... hopefully this will be a similar task.
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Hi all,
Few days ago the tv gave up on me, i found this thread, read it couple times and check all
U2, U4, U7, U8, U9, U33 and the voltage are fine. Now im kind of frustrate, could someone shed some light for me.
Any suggestion would greatly appriciate
ThanksComment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
A description of the failure or pictures of the failure is always a great start.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
I was able to:
- Turn on the TV
- Vizio Logo turn from orange to White
- Screen is Black (not even backlite or a flash, completely black from off to on)
- Not able to turn OFF TV unless unplug
From what I've read from this thread and other thread it, the problem is from the main board mostly U33. I used my multimeter to check and got the following number
Chip Location / Vin / Vout / Adj,Gnd
U2 / 5.19 / 3.30 / 2.0
U4 / 5.19 / 3.30 / 2.0
U7 / 3.30 / 1.28 / 0.0
U8 / 5.19 / 3.30 / 2.0
U9 / 3.30 / 1.52 / 0.0
U33 / 5.19 / 3.30 / 2.0Comment
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
Check the inverter boards as well. (Master and Slave)The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: Vizio VW42LFHDTV10...Brother Mikes TV...
two caps on both inverter are bulge, will get it replace but it shouldn't effect the main board ( cannot turn off after it turned on?)Comment
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Hi all, a newby question about a bridge rectifier I'm trying to identify.
I'm in the midst of reparing a battery charger in work which went pop, The bridge rectifier has shorted and took out a couple of other components. The rectifier in question has a part number KPB305G, and it looks like it's obsolete. Does any one know what I could replace it with?... -
Hello
My Fujitsu Esprimo Q556 motherboards blew up. At least fuse, bridge rectifier and capacitor got damaged. I have changed fuse and bridge rectifier (DF1508S), but I don't know what capacitor it is (picture). I know that capacitors size is 47nF, but I don't know other specs for it. Can you help me to choose right capacitor for my motherboard?
There is 240V AC on input side of bridge rectifier and 340V DC as output on capasitors side.
Thanks.... -
I have a 40 volt AC transformer that I put a bridge rectifier on, and I wanted to see the input signal and the output signal on the same screen on my scope, so I set one channel up with the test lead on one side of the input and the ground lead on the other side of the input, then I used another channel on the scope and clipped the test lead on the positive side of the output then the ground on the negative side of the output.
When I connected the transformer to power, the wire that was connected between the ground lead on the second channel and the negative side of the bridge rectifier... -
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'm learning about motherboard repair and I believe I've traced the issue down for the South Bridge on the particular motherboard I'm working on. My path of concluding that:
- There's no sign of any attempt to power on when pushing the power button.
- No PSON signal is reaching the 24-pin ATX connector.
- The Super IO chip is receiving the PS_SWITCH signal from the power button and is relaying this signal back to the South Bridge.
- The Super IO is not receiving the S_SLPS#_R signal back from the South Bridge
- If I pull the Super IO S_SLPS#_R pin...
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