hello everyone i have got technika lcd37-207 with 17w20.1 power supply my problem is sometimes when i turn tv on from stand by blu light goes to dim and tv doesnt turn on it just show dim blue light if i unpluged tv and leave it 10 15 minutes and turn it on it work i bought repair kit for power supply and put it on still same and somtimes if u turn xbox on nothing on display and i have to turn it off and turn back on after 10 15 min display comes on
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Re: technika lcd37-207
i checked all supply on power board all correct all supply on the power board -
Re: technika lcd37-207
can you recheck the psu part number as google has zero hits on that numberComment
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Re: technika lcd37-207
17pw20.1 vestel psu http://www.ebay.co.uk/itm/32-GOODMAN...item41802cbe11 i even checked all caps they all seems alrightComment
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Re: technika lcd37-207
what repair kit did you buy?
are you sure that when your turning on that the image is there and it's not just the backlight not turning on?Comment
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Re: technika lcd37-207
http://www.ebay.co.uk/itm/17pw20v1-v...item3cda8692f8 this is kit forvestel 17pw20 psu no its not backlight mate i checked inverter its ok standby doesnt go to green when u press it goes to from solid blue light to dim blue light it not flashing it just dim blue lightComment
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Re: technika lcd37-207
if all your voltages check out, check the mainboardComment
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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... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
Hi all, I just need to know that, can i use SMPS type power supply to test and short circuit detection on a laptop motherboard?
I saw 95% of repair guys are using only Linear bench power supply. linear bench power supply is pricy, thats why i planned to get one SMPS supply.
i know that in linear power supply the noise will be very low comparing to SMPS supply.... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
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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