As mentioned in the thread title, my 37" Wharfedale TV struggles to wake up from standby.
On plugging into the wall, the power LED will blink for a while (duration varies from minutes to hours). Trying to wake it up gets no response.
Once I get a steady light, I can start trying to bring it out of standby. Pressing a button will, if it's warm, wake up the TV. If it's cold, or the TV has been off for a while, the power light will blink off, the screen may flicker on, the speakers may pop before the light comes back on and it goes back into standby.
As I said, the problem seems affected by temperature. If the room is cold, it takes ages to get things going. If it's very warm, things seem fine.
I don't know if this is connected, but there is nearly always a constant buzz coming from the speakers. It only goes away if the volume is set to zero - the buzz is otherwise unaffected by the volume controls.
Once I get it up and running, it works fine.
The power board is a 17PW20 V2, which I gather from reading other posts, are known for being problematic.
I identified two caps - C818 and C857 - as being close to failure. The tops are noticeably bulging.
I've ordered replacements and I'm confident I can get them in okay.
Am on the right track? Could faulty caps at the positions I've identified cause problems like this?
Another thought I had was, could it be possible to just completely bypass the Standby section of the board, so the power switch just turns the thing on?
Would this be doable, and how complicated might it be?
Hi everyone! I'm very glad I found this place.
--S
On plugging into the wall, the power LED will blink for a while (duration varies from minutes to hours). Trying to wake it up gets no response.
Once I get a steady light, I can start trying to bring it out of standby. Pressing a button will, if it's warm, wake up the TV. If it's cold, or the TV has been off for a while, the power light will blink off, the screen may flicker on, the speakers may pop before the light comes back on and it goes back into standby.
As I said, the problem seems affected by temperature. If the room is cold, it takes ages to get things going. If it's very warm, things seem fine.
I don't know if this is connected, but there is nearly always a constant buzz coming from the speakers. It only goes away if the volume is set to zero - the buzz is otherwise unaffected by the volume controls.
Once I get it up and running, it works fine.
The power board is a 17PW20 V2, which I gather from reading other posts, are known for being problematic.
I identified two caps - C818 and C857 - as being close to failure. The tops are noticeably bulging.
I've ordered replacements and I'm confident I can get them in okay.
Am on the right track? Could faulty caps at the positions I've identified cause problems like this?
Another thought I had was, could it be possible to just completely bypass the Standby section of the board, so the power switch just turns the thing on?
Would this be doable, and how complicated might it be?
Hi everyone! I'm very glad I found this place.
--S
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