Benq FP731

[W1ll]

Re: Benq FP731

Hi,

I am no nearer solving this problem now than I was a week ago!
Everything listed so far has been done, but still the 2 secs to dark persists.

My question is how should I progress from here?

Will.

[PlainBill]

Re: Benq FP731

Hi,

I am no nearer solving this problem now than I was a week ago!
Everything listed so far has been done, but still the 2 secs to dark persists.

My question is how should I progress from here?

Will.

Try hooking up a known good set of CCFLs, if you haven't done so.

The problem COULD be in the sense circuitry; I don't even want to go there.

PlainBill

[W1ll]

Re: Benq FP731

Hi,

I don't have any Parts that I can swap.
The lamps work, although briefly. How could it be both of them at fault?

[alexanna]

Re: Benq FP731

Are you using a fuse for the inverter,or do you still have the 1157 bulb installed?

[W1ll]

Re: Benq FP731

Hi,

I'm still using the bulb as I haven't ordered a replacement fuse yet.
I'm waiting to see if I need to purchase anything else.

[alexanna]

Re: Benq FP731

I have not tried using the light bulb as a simulated load,but I wonder if the light bulb may be reducing the available voltage to the inverter causing the 2 sec problem now.
If it were me I would try a fuse and see what happens.

[W1ll]

Re: Benq FP731

Hi,

I've substituted the bulb with a domestic 3A fuse.
This time the lights only come on once instead of twice and then go out.

[PlainBill]

Re: Benq FP731

If you disconnect all but one CCFL will it light for a few seconds? Try this with all four CCFLs.

The design of the inverter is such that any one bad CCFL will cause all to shut down.

PlainBill

[W1ll]

Re: Benq FP731

Hi,

I think it's time for a new monitor!
In attempting to gain access to the lamps, one of the ten ribbon cables to the screen tore away!

Even though I was especially careful as I knew they were delicate, to my disbelief it still happened.

I would therefore like to thank PlainBill & alexanna for their help.
Maybe next time I'll do better.

Regards,
W1ll.