Author Topic: Ue55d7000  (Read 130 times)

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t1412

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Ue55d7000
« on: July 13, 2020,12:27:57 »
Hi fella's has anyone repaired this psu, it's a  bn96-00428b, clicking i disconnected the mainboard no backlight showed, or anyone got a service manual thanks     

shaun

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Ue55d7000
« on: July 13, 2020,12:27:57 »

downunder

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Re: Ue55d7000
« Reply #1 on: July 14, 2020,04:28:53 »

Hi Shaun, Most service manuals don't have power supply schematics because they're usually sourced from a third party. However, if it's continually rebooting, check the pins on the large transformers on the power board, especially the ones that go through rivets on the board -they suffer from dry joints.                 Bruce

downunder

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Re: Ue55d7000
« Reply #2 on: July 14, 2020,04:37:55 »
Here's the service manual for the Oz version UA55D7000.

Mulja tv repair portal

Re: Ue55d7000
« Reply #2 on: July 14, 2020,04:37:55 »

t1412

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Re: Ue55d7000
« Reply #3 on: July 16, 2020,14:54:51 »
Hi bruce thanks for the service manual, where i buy my parts from they have a technical department, apparently the d series doesn't have the backlight test built in, which caught me out, looking like a mainboard fault,will update if i find one. thanks

shaun     

Davy

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Re: Ue55d7000
« Reply #4 on: July 30, 2020,07:59:44 »
Have a look here https://elektrotanya.com/samsung_bn44-00428b_led-tv_power_supply.pdf/download.html

I sometimes end up searching for the power supply separately.... do be careful though, there may be slight variations for different sets. Check all diodes for leaks or s/c, especially on the inverter side.

Dave
« Last Edit: July 30, 2020,08:02:14 by Davy »

 

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