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BEKO AC remote faint response

starLED

Member
My BEKO AC remote has a faint LCD display and when I press the buttons display is fading and remote is not that responsive. I have to click couple of times to get AC running.

I have disassembled the remote, and found three suspicious black capacitors.
It seems that two bigger one 16V have leaked, one of them seems to have a hole near the top.
The smaller one I am not sure if its bad.

Can someone confirm visually if they are bad and can they cause these problems?

Thanks.

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Yes replace all 3 with good quality low ESR caps, and clean with Isoprop. hopefully no other damage. Practice low ESD risk methods.
 
I replaced all 3 caps, but the LCD screen is still faint.
Buttons are more responsive now.
The old caps have good capacitance.
Could it be the zebra stripes are bad?
There are no missing segments on LCD, the whole LCD is faint.
I pressed the LCD screen on the sides, segments do get bright, but not the whole LCD.
What can be an issue, besides zebra stripes which I will not try to replace?


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Zebras definitely need cleaning, common problem. Also when caps fail, if they
fail short they can take out other components, so trace out that and their
surrounding components.
 
I measured resistors in circuit and found two that I am not sure if they are good.
R3 = 105 is measuring 2M ohms and with reversed leads is measuring 250K ohms.
R11, which is above R3, is also 105 and it's measuring 1M ohms.
R2 = 1R8 is measuring 2.8 ohms instead of 1.8.
Is this a problem?

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