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Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 15775
Experience:  Over 16 years of experience installing and repairing electronics.
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Olevia 747i B11 47-inch. Power light is on. Sound of it

Customer Question

Olevia 747i B11 47-inch.
Power light is on. Sound of it powering on, but no image.
Replaced obviously puffy (slightly leaky) 680UF 35v capacitors on Slave and Master boards.
No other signs of bad capacitors.
Still, same problem.
Ideas? Thanks!
Submitted: 1 year ago.
Category: TV
Expert:  Pete replied 1 year ago.

Hi there,

If the power supply board is suspect then you will need to test the voltage outputs from the board to confirm if it is working or not.

Let me know if you have a voltmeter available to do this.

Pete.

Customer: replied 1 year ago.
I have a voltmeter.
Expert:  Pete replied 1 year ago.

Ok, great, now can you identify the voltage outputs on the power supply board?

The expected voltages are normally marked on the board.

Test these outputs and let me know what you find.

Customer: replied 1 year ago.
Ok. Will do. May not get to it until tomorrow.
Expert:  Pete replied 1 year ago.

That's ok, just reply back when ready.

Customer: replied 1 year ago.
The power board is supposed to have a 24V output.
With the cord plugged in and power gateway switch on, I get ZERO volts at the power board output.
When I press the "TV On" switch, and I hear an electronic "click" sound, I get maximum of 19 volts, which drops to ZERO over the next several seconds (as the capacitors empty?).
Expert:  Pete replied 1 year ago.

Ok, then the power supply board is suspect and will need to be replaced.

You can obtain a replacement power supply board from:

www.shopjimmy.com/olevia/747-b11

Customer: replied 1 year ago.
Shopjimmy was out of stock, so ordered one from ebay. Won't be here for a week.
I'll be back in touch after I install it.
Expert:  Pete replied 1 year ago.

Ok, let me know how it goes.

Pete.

Customer: replied 1 year ago.
Hello Pete,
Just got a request for rating you.
I'll do that after you continue to advise me in the installation and testing of the power board.
Thanks!
Expert:  Pete replied 1 year ago.

That's ok, you can ignore those requests, they are automated and sent by the website :)
(if you do rate though, we can still reply back and forth as often as required for no extra charge)
Pete.

Customer: replied 1 year ago.
Ok, Pete. I got the replacement powerboard, and installed it. There is no difference in the output voltage from the board I took out. It kicks off at 21.6V within a second or so of the power switch being turned on, then slowly drops over the next several seconds (I'm guessing as the capacitors discharge.)
Customer: replied 1 year ago.
Four days later. Waiting for a response. Please respond.
Customer: replied 1 year ago.
Five days later and no response ....
Customer: replied 1 year ago.
Six days and no response...
Customer: replied 1 year ago.
It is now 18 days past my last message. Despite the now-disappeared banner statement that I would be handed off to another tech, I have had no contact. I will be seeking a complete refund due to my lack of satisfaction.