problem with dell tft monitor

sillysi

scheming_gypsy wrote:

what happens if you disconnect it from the computer and switch it on?

Its does exactly the same as when connected to the pc .The power light flashes and it makes an intermittent sqweeky noise every 1second.

ABH_3

razorbladekisses wrote:

Advent is the make of the computer.

All very interesting I'm sure ... but for the bit where the OP said "My 17" dell tft monitor has just died on me"

The reason I asked is that Dell don't make monitor panels themselves. They just rebadge them with a 'nice Dell logo' and package them for dispatch. So with this information ie: the original manufacturer of the monitor, we could approach that manufacturer and ask them how much for the desired spare part. Or for possible retailers of that particular spare part.

Unfortunately, unless the same manufacturer made the monitor as the main computer, the manufacturer\trading name of the pc manufacturer isn't alot of help

Sugar_Coated_Owl

Sorry if I've confused you but my PC isn't Dell. I added to the OPs thread because I thought it would be silly to have two threads with basically the same problem.

For my PC, Advent made the whole thing. I've contacted Advent but they say they no longer make replacements.

quoia

sillysi wrote:

Its does exactly the same as when connected to the pc .The power light flashes and it makes an intermittent sqweeky noise every 1second.

That is the "standard" description of a SWITCHED MODE PSU that has its output short circuited or overloaded and can't start up correctly.
It tries to start but the overload stops it happening so it shuts down, and then it tries again. Happens at about 1 second intervals and makes a little "chirp" every time !

Garetha

Just a quickie - the fault may still be inside the monitor! :eek:
The power supply needs to be checked with a meter or other device or a temporary substitute tried on the monitor.

sillysi

quoia wrote:

That is the "standard" description of a SWITCHED MODE PSU that has its output short circuited or overloaded and can't start up correctly.
It tries to start but the overload stops it happening so it shuts down, and then it tries again. Happens at about 1 second intervals and makes a little "chirp" every time !

What can i do about this ? or is it just had it ?

quoia

sillysi wrote:

What can i do about this ? or is it just had it ?

As Garetha has said - you need to confirm exactly what is faulty.
Trying your PSU adapter on another monitor (doesn't have to be same make or model - just same voltage and NOT requiring more power (amps) than yours - and with the same power connector with the same polarity +ve/-ve) will prove which bit it is. You can do the same or double check by using another compatible PSU on your monitor.

You could test and measure the the output of the PSU with a DVM / multimeter but you will need to provide a load in order to do it properly.
Some switched mode PSUs will not start if unloaded or even if yours does, there is nothing to say that the voltage (say 12v) will remain once a significant amount of current is drawn from it.

A 12 volt bulb from a car would probably do - depends what the power rating of the PSU is as to which bulb or how many would provide a full load.
A 21w indicator bulb would draw 1.75 amps ( 2 bulbs in parallel = 3.5 amps) or a 55w headlamp bulb would be about 4.5 amps.

Whilst it could be the PSU is no longer able to provide the full power the monitor needs (say 3.5 amps - see monitor or psu for details) I would think this is most UNLIKELY.
It's more likely the monitor itself has developed a fault and it is trying to draw more power than it should do. That said, it might be possible to actually get it fixed - quite possibly a voltage regulator or similar part of a power circuit within the monitor. Perhaps a TV repair place might be able to help with that.

quoia

sillysi wrote:

What can i do about this ? or is it just had it ?

Can you see if there is an FCC Id number or some model number on the back of the monitor ?
I might just be able to dig up a circuit diagram or something which might help.

sillysi

quoia wrote:

Can you see if there is an FCC Id number or some model number on the back of the monitor ?
I might just be able to dig up a circuit diagram or something which might help.

I cannot see a FCC number but the model number is E173FPb.....good luck.