Got a 32" magnavox that will not turn on no lights nothing. Fuse ok, caps look ok. Any suggestions are greatly appreciated? Thanks
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Re: Magnavox 32mf339b/f7 no power
What is the Voltage on the Red and Black cables near the big cap in the first picture.
CARE Very high voltage 1.41x mains. so set meter on 600vdcPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: Magnavox 32mf339b/f7 no power
169 vdcLast edited by MountainMike; 12-22-2013, 04:35 PM.Comment
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Re: Magnavox 32mf339b/f7 no power
ok well that is spot on for120vac so now you need to test for low dc voltages
somewhere on the links to the main board section of that board - I just hate them.
If they are not labelled and you dont find a schematic service manual I would just try testing for vdc voltages up to 50v on the diodes radiating out from the yellow transformer ( on the secondary (cold) side)
I am off to bed now perhaps others will join in.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Magnavox 32mf339b/f7 no power
Mountain Mike
any luck with finding your problem. Your post came up on a search as I have a 32MF338 with the same issue..dead...was wondering what you found so far..Comment
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Re: Magnavox 32mf339b/f7 no power
I just fixed this model, in my case it was SB390 Diode (D642 on my board). Borrowed the same diode from different board and it fixed it. Now I need get replacement, but closest match that is available for shipping is SB3H90 - will it work?
http://www.digikey.com/scripts/DkSea...14663043682765
This is link for original diode http://www.digikey.com/product-searc...376383?k=SB390Comment
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Re: Magnavox 32mf339b/f7 no power
this tv is service friendly heres the tech manualComment
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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.
Assuming... -
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... -
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... -
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