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Anthony_Infotech, Technician
Category: TV
Satisfied Customers: 14885
Experience:  20+ years experience TV expert (field and bench) 9 approved qualifications in TV-ELECTRONICS
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Tv will mot turn on

Customer Question

tv will mot turn on
Submitted: 1 year ago.
Category: TV
Customer: replied 1 year ago.
I found a blown fuse in the middle of the power supply board.
I replaced it and blew right away.
Expert:  Anthony_Infotech replied 1 year ago.



Thanks for the preliminary troubleshooting and that was the right thing to do however because its likely to be surface mount components damaged and regular ones on the power-board you should replace the power-board complete, it will have a part-number etched on the board beginning BN use that number and go to to order if they do not haveit google the number for suppliers, its very easy to fit ,it just unplugs from the leads going into it and unscrews off the chassis , reverse to fit

Let me know if you need more help

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Many Thanks


Customer: replied 1 year ago.
Hi Anthony,Should I consider disconnecting all components to the power board to make sure it isn't something else?
Customer: replied 1 year ago.
BTW...Jimmy has this board on backorder for months
Expert:  Anthony_Infotech replied 1 year ago.

No it WILL be the power-board itself no need for checks nothing else can cause a fuse to blow with modern sets unlike the older CRT, as the voltages are low the set will trip if there is a fault else where and wont blow fuses so its a fault of the power-board


Expert:  Anthony_Infotech replied 1 year ago.

Google the part-number only

Expert:  TV Tech1 replied 1 year ago.

UN55B7100WF uses power board BN44-00271A. While Shop Jimmy still doesn't have this available, I have one site selling it in stock. Let me know if you want the information, ok?

Expert:  Anthony_Infotech replied 1 year ago.

Please respond back when when ready thank you