Hello forum,
Hoping to find some advice. My TV isn't working. It's a "Digihome" set - a low cost brand for the UK I think, but made by Vestel in Turkey. Model number DLF401080FVHD. 40 inch OLED. I've had it for about two years. It was very cheap but I've been happy with it - it has performed surprisingly well.
Until this morning. It has suddenly developed a problem where the screen goes blank a short time after switching the set on - typically a minute or two. The sound still works. I've done the "torch test" in a darkened room and the screen image is still visible, so it looks like the screen is intact. The backlights go out though - can see them clearly through the back of the case when they're working (and when they're not). Also once or twice I had a slightly different problem where the picture was visible but the left hand side of the screen was a lot dimmer than the right hand side (for a short while, until the whole thing went black again).
A bit of research tells me the likely culprit is the LED inverter/driver.
Now...I've taken the back off the TV and had a look around. There's nothing obviously wrong - nothing looks burnt, no obvious broken connections, everything seems clean, etc. I took some photos - included here. Two circuit boards mounted at the back - a yellow one which looks like a power supply and a green one which seems to handle all the inputs & outputs.
There is what looks like possibly an additional long, thin circuit board right at the bottom of the set (hard to access). Is that likely to be the LED inverter down there hiding at the bottom?
Has anyone seen this set before? Or able to help me identify which bit I might need to look at repairing/replacing (if indeed I'm able to get spare parts for this model)?
Given the low price of the set, only a cheap DIY fix is feasible - otherwise I'll just sell it for spare parts and buy a new one. Shame though.
Grateful for any advice. Reasonable degree of DIY/electrical knowledge, but far from being an expert on TV design.
Thanks!
Alan.
Hoping to find some advice. My TV isn't working. It's a "Digihome" set - a low cost brand for the UK I think, but made by Vestel in Turkey. Model number DLF401080FVHD. 40 inch OLED. I've had it for about two years. It was very cheap but I've been happy with it - it has performed surprisingly well.
Until this morning. It has suddenly developed a problem where the screen goes blank a short time after switching the set on - typically a minute or two. The sound still works. I've done the "torch test" in a darkened room and the screen image is still visible, so it looks like the screen is intact. The backlights go out though - can see them clearly through the back of the case when they're working (and when they're not). Also once or twice I had a slightly different problem where the picture was visible but the left hand side of the screen was a lot dimmer than the right hand side (for a short while, until the whole thing went black again).
A bit of research tells me the likely culprit is the LED inverter/driver.
Now...I've taken the back off the TV and had a look around. There's nothing obviously wrong - nothing looks burnt, no obvious broken connections, everything seems clean, etc. I took some photos - included here. Two circuit boards mounted at the back - a yellow one which looks like a power supply and a green one which seems to handle all the inputs & outputs.
There is what looks like possibly an additional long, thin circuit board right at the bottom of the set (hard to access). Is that likely to be the LED inverter down there hiding at the bottom?
Has anyone seen this set before? Or able to help me identify which bit I might need to look at repairing/replacing (if indeed I'm able to get spare parts for this model)?
Given the low price of the set, only a cheap DIY fix is feasible - otherwise I'll just sell it for spare parts and buy a new one. Shame though.
Grateful for any advice. Reasonable degree of DIY/electrical knowledge, but far from being an expert on TV design.
Thanks!
Alan.
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