I have determined I have a shorted primary on this transformer. I am unable to locate a suitable replacement. I would like to try to rebuild it but I don't know how to identify the proper magnet wire to use. It is stranded wire and has 25 strands. I measured the diameter with a digital caliper in several places. It ranges between .64mm and .68mm. Any help will be appreciated. Thanks in advance for your time.
Need help identifying transformer wire for DP42849 power supply.
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?by Tynan DillI 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...7 Photos -
by sam_sam_samThis is the switching power supply that is used in this project
https://www.ebay.com/itm/164440680270?var=464055952700
Here is the BMS protection board
https://www.ebay.com/itm/38688703079...iiBFn%2B3x1VjJ... -
by unimatrix93Dear forum, I would like to ask some help identifying the backlight circuits resistors to limit the ampere to the backlight leds.
The power supply is a BN44-00852 and I want to decrease the backlight to increase the lifetime of the LEDs.
The TV is pretty much always on, used for CCTV cameras.
I suspecting R9838 -> R9841 resistors but I'm not sure. Thanks in advance!
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by Phoenix88Hello everyone !
I'm trying to repair the power supply of my Elipson W35 Bluetooth speaker. The problem is that the PWM circuit has no reference "it's a smd marked U4 on the pcb. The reference has been erased at the factory. Here are some photos of the circuit; could you please help me identify the circuit? Thank you, and have a great day
Important point: the resistor R108 marked R100 smd mount is a replacement and I'm note sur if it's the good value, it's relay the mosfet to the ground capacitor 450v
the mosfet is a :SVF12N65F
I also search... -
Hi. I am trying to fix a 6V 5A power supply that would was used a lot.
I want to fix it partly for learning, and part because I don't want to buy a new one.
It has distinctive smell of burning but not seen obvious burned components yet. I'm not sure where the fuse is.
I tested the only slightly bulged capactitor (out of circuit) and it measured normal capacitance and ESR.
Everything else was tested in circuit with a multimeter.
In circuit tests
I tested the large diodes underside and they seem fine.
I tested... - Loading...
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