Dell W3201C blinking power light (but powers on)

Hi, Do you have a make and model number for this TV?

after what incident the sound stopped /

Coaxial cable does not carry video signals but rather rf-signals
To use coax you will have to tune like you are searching for a signal from your aerial..
If you prefer to use video then you will have to use a video cable either rca or hdmi. you can then choose video or hdmi from the remote

Len

Yes, either a new back light, or a new inverter (the circuit inside the TV that powers the back light): http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120540641447&rvr_id=&crlp=1_263602_263622&UA=WVF%3F&GUID=a4a3861a1240a0aad0b022b0ffee21c3&itemid=120540641447&ff4=263602_263622

It looks like the parts for your TV are readily available online (unusual), but I couldn't find the backlight itself, sorry.

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Most likely a power supply component has aged and thus changed value and/or failed. Take it to a reputable repair person.

You could try a power drain:  Unplug the TV's power cable so that the TV is not grounded to the house.  Then press and hold in the TV's own power button in for one minute to drain the capacitors.  Plug the TV back in and see if it made a difference.  If not, it would appear that the software in your TV's mainboard is corrupt and would need to be serviced.

if this is a DELL W3201C read this.

Have the same model and same problem
probably It is a bad inverter board, in my case one of the 16 transformers is burnt out on the inverter board. still trying to find a replacement component. if not replacing the board is the only option or getting the inverter board repaired.

by the way, this TV has a Samsung panel: model LTA320W2-L03. so it needs parts for a Samsong not a DELL.
DELL does not manufacture or fix them becuase they don't make them

Have the same model and same problem
probably It is a bad inverter board, in my case one of the 16 transformers is burnt out on the inverter board. still trying to find a replacement component. if not replacing the board is the only option or getting the inverter board repaired.

by the way, this TV has a Samsung panel: model LTA320W2-L03. so it needs parts for a Samsong not a DELL.
DELL does not manufacture or fix them becuase they don't make them

Its the power supply!!
well i migrated to this issue from having no sound and video with just the power button illuminated. I replaced the power supply with one from an online salvage store and it worked fine for about two hours and then it shut off, turned it back on and then twenty minutes later off again...repeat... need an electronics person to trouble shoot and trace which resistors and or capacitors are overloading.
anyone??