"Peter V Rawlings" wrote in message
...
I've had this 19" FD Trinitron-based unit for around 5 years. Quite early
on, the black became greyer and flyback-like white diagonal lines started
to become visible. In truth, the situation has 'flattened out' now, but
I'm sure this is a burn-in issue that once adjusted back is likely to go
the distance - yes?

I realise this is not uncommon for the E400 - where the on-screen set-up
does not allow you to turn the brightness down any further - clearly there
is early life drift in one or more of the HT/EHT components. :-(

Is there a simple one-touch adjust inside that is going to let me bring
down the black level without losing geometry or have other set-up
interactions?

If it is straightforward, an ident/location of the trimmer would be
greatly appreciated.

Cheers,

Pete.

The flyback should have two controls on it: focus and screen
You can try to reduce the screen voltage to get rid of those retrace lines.
There are a number of freeware programs that generate patterns to help
adjust monitors. Using a contrast/resolution or greyscale tracking pattern
may help you back off the screen control to your liking. You may need to
bring up the contrast after this.
If you turn the focus control by accident you'll have to correct it,
preferrably using a dot pattern -- adjust for sharpest center dot.
These controls are simple enough to change back if they affect geometry or
you don't like the results for other reasons.
Just be careful with the screen control and don't turn it the wrong way or
the unit might go into HV shutdown. Even if it does, it shouldn't blow
parts, but be on the safe side anyway -- slowly move the control to see
which direction is the right one.