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Re: Magnavox 42mf231d/17
Well I was given one of these TVs and fist it did nothing... I had a blown fuse after replacing the fuse i got the blue power light on... then i noticed the ribbon and power wires disconnected to the left y-board... I found that same cap blown off the board and replaced it so far... I have seen another picture of the y-board and the transistor that has the blue resistor soldered to it wasn't there... however yours does as does mine... I am wondering if this is a factory flaw/repair on certain models... however Bills diadosis seems to be on the right track to me... there is a green fuse labeled f5005 that has a serious fluctuation in power and appears to be not passing that same signal to the other side with leads me to believe that bill is on the right track as to the ICs failing and causing the transistors failures....Comment
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Re: Magnavox 42mf231d/17
As I mentioned in my previous post I noticed that your YSys board appeared to have a fix on it... as does mine with the same blown cap upon further investigation of the board I foundthat 2 resistors located just in front of the upper Buffer board were disconnected/desoldered from the YSys board... this is for some reason a bypass of some sort or signs of a repair in fact... these two resistor are r5028 & r5090 if anyone know the reason for this bypass/repair please let me know...
On aa side update note I removed the sound control that covers the lower half of the lower ybuffer board and found a chip with no heat sink and friend to a crisp...
Also he note that you reading should be around 500K ohms not around 4.xM ohms...
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Re: Magnavox 42mf231d/17
these sets suck. i have two phillips( same inside) and between the two and several ebay parts i was able to come up with ONE good set of buffer boards but have nto been able to repair either ysustain.
theres several guys on ebay who will rebuild your ysus and also test yoru buffers if you send them to him. thats the way to go i think. in my case its jsut not worth the expense and headache for such an old set.Comment
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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.
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Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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Fixed a 10yo HP inkjet with a bulging cap on the digital computer power rails (1 to 5V). Unstable voltages causing these inkjets to not boot properly or crash quickly. Seems like more and more of these are showing up nearing the 10 year mark. Board design seem to look similar for many of these printers.
https://h30434.www3.hp.com/t5/Printi...t/true#M99792202-03-2025, 09:50 PM -
Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
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TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
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