Re: Olevia 747-b11 power on, screen dark
PS - when TV has power but is switched OFF, D1 LED is lit up as RED
PS - when TV has power but is switched OFF, D1 LED is lit up as RED
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Re: Olevia 747-b11 power on, screen dark
Is there anyone that can help with the Olevia 747-B11 tv?Comment
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Re: Olevia 747-b11 power on, screen dark
I also could use help with a 747i-B11.
Same symptoms as TCBComment
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Re: Olevia 747-b11 power on, screen dark
R.I.P. Olevia 747-B11
It served us well for 11 years before a hiccough became permanent; the last gasp was asking us to choose our language but never responded to input and the next power on brought nothing.
As a tech with 50+ years experience, I should have checked power supply output but convinced it was at fault since the set died in steps that could well be caused by this, but instead bought a ‘pull’ out of Ontario, Olevia’s former home.
The replacement supply help nothing so I checked it’s outputs and then, reinstalled the original and belatedly checked it getting the same readings, my bad.
Since my wife and I are somewhat aged, I had hoped the set could be removed by our sons but with a replacement ordered and their busy schedule, I stripped the set of a lot of it’s weight and carried it out in chunks.
I went over the main kboard, found only one suspected fault, a shorted diode which proved to be OK with one end lifted.
I have a broad array of test equipment available but after searching, gave up when I could not find any schematic which would have helped since through two businesses, I have rescued several thousand pieces of gear, commercial and consumer, during my active years, probably 90% without any documentation at all.
This though, is populated with too many ICs some with custom or proprietary so further troubleshooting is fruitless.
The set’s mechanicals are all intact and the LCD screen is likely without flaws, but the speaker set, although not stellar, has been repurposed.
If anyone is of need of the leftovers and willing to pay shipping or pick it up in rural WV, reply with your wishes.
Steve Allison
Grantsville, WVComment
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Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hello,
I have an HP 15-eh1070wm laptop that came to me for the same reasons I am starting this thread. The charging LED appears when the laptop power adapter is connected and the power LED appears when pressing the power button, but nothing appears on screen.
First thing I did was take off the bottom panel and remove the battery and then press and hold the power button for 30 seconds and then reinstall the battery and power on. The fan spins and this time, the back light illuminates and a brief message appears on the screen for about 1 second saying something along like,... -
Hello, I have a Canon TS8350 printer. The problem is that when I turn it on, "CANON" appears on the screen, but it never goes away. You can leave it on for a whole day, and it doesn't go away. Does anyone know how to fix this? I've tried unplugging it, but nothing. I've also tried holding down POWER, but nothing. In fact, once it turns on, it can't be turned off with the Power button. I've also held down Power and then plugged it into the Power supply, and the power light flashes once and doesn't turn on, but then when I press Power again, it turns on. Currently, it's a nearly new paperweight,...05-07-2025, 12:26 AM -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
Hello,
Stopped by this site trying to fix my parents Panasonic Plasma TV.
Model number is TH-50PZ85U
Power comes on and the red power light stays on solid.
Did a few checks like hold the power button on for 60 seconds, hold the - Volume while holding the menu button, no luck, still@ blank grey screen as the screen lights up very vague.
I also hear a few clicks.
I also think my parents said there was a thunderstorm and the TV failed after that.
Section 6 in the service manual talks about power and no screen,...10-30-2024, 10:09 AM
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