LG RZ42PX11 - getting rid of sparklies by adjusting v up and V down

[Cornboats]

I've had to change y-sus and Z sus boards now sets got sparklies (small coloured spots) all over the screen like a rash.

I read previous threads and consensus appears to adjust v-up and v down pots. I read in the manual that this could only be done using a scope. My scopes only 20 mhz. Anyone done this successfully. Is it just a case of fine adjustment a bit at a time. Do you move both pots in the same direction or 1 at a time?

Any helpful advice would be gratefully accepted.

[tom66]

Re: LG RZ42PX11 - getting rid of sparklies by adjusting v up and V down

Needs a new control board to fix sparklies - or updated firmware. AFAIK, not fixable by tweaking V_up or V_down.

[Cornboats]

Re: LG RZ42PX11 - getting rid of sparklies by adjusting v up and V down

Thanks for replying. I haven't got a spare control board so lets go down the firmware route.

How do I upgrade?