Hi all

Am having a problem with my new LOTR. Have put in a 2 SMD Premium 'non-ghosting' kit from pinball-led.co.uk and also an LED OCD board.

Everything looks fine apart from all lamps on row 3 and column 7 of the lamp matrix which are all suffering from terrible ghosting, no matter what settings I put my OCD board to.

Any suggestions?

Thanks

It was happening with the LED's before the OCD board was installed.

I've also tried putting normal LED's in the same lamps that ghost and get the same problem.

Just to add no issues at all if the lamps use non-LED bulbs

The problem is that any lamp in column 7 will ghost when a corresponding lamp in the same row is on.

Column 7 issue:
Return of the King is row 1 column 7, any lamp in row 1 being on will make this one ghost
Legolas is in row 2 column 7, any lamp in row 2 being on will make this one ghost

On row 3, it seems more than the LED's are lit up when they shouldn't be rather than flickering.

Sorry, the video just showed the single column 7 lamp (Return of the King) as an issue, all lamps on column 7 have the same problem. When I recorded I put normal bulbs back in all of column 7 bar that one to demonstrate.

Another video

This time, Return of the King and Legolas of column 7 have LED's and Mystery of row 3 has an LED (mode start is a regular bulb this time)

It happens to ALL inserts on column 7, not just those 2

When any lamp on row 1 is on, 1 / 7 will flicker
When any lamp on row 2 is on, 2 / 7 will flicker
When any lamp on row 3 is on, 3 / 7 will flicker
When any lamp on row 4 is on, 4 / 7 will flicker
When any lamp on row 5 is on, 5 / 7 will flicker
When any lamp on row 6 is on, 6 / 7 will flicker
When any lamp on row 7 is on, 7 / 7 will flicker
When any lamp on row 8 is on, 8 / 7 will flicker

With the OCD board removed, the same problem happens but you also get the low level of ghosting that the board is designed to eliminate, so the OCD board is doing its job very well as far as that goes

I will look into the wiring / diodes tomorrow

Would the best place to start looking be the lamp located at row 3 column 7, which is the palantir globe which is one of the few 44 bulbs in the lamp matrix? Will have a look when I get home from work tonight.

Thanks

What is the best way to check the existing lamp diodes to see if they are fine or not other than visually checking them?
If I replace a diode does it matter which direction it is put into the IDC bulb holder?
Is there a specific method for removing the cable and diode from the IDC bulb holder and putting them back in?

Sorry for all the questions, still new to this pinball stuff

Ok thanks Herg

Just wanted to say too that there is a very nice improvement in the other LED's that suffer from the small of 'regular' ghosting when your OCD board is used on LOTR. Will try it out on Spiderman at some point too

Ok, took out the palantir globe lamp, which funnily enough is on row 3 column 7 and all other lamps are absolutely fine now, so that's where the problem lies

Will check them tomorrow, I'm just glad to have gotten to the bottom of it so time to play a lot of LOTR tonight. Just want to say again how good a job the OCD board is doing too on the inserts, not cheap to import over to the UK by any means but certainly worth it for the results. You've done a good job with it Herg

Herg

When you say diode (band), do you mean the negative side?

By your diagram, the lamp goes like this:

Yellow wire -- lamp -- diode (no band) -- red wire -- diode (band)

The negative side of the diode is not on the same lug as the red wire

Thanks

If only I'd have seen that other thread first, thanks for linking it, looks oddly familiar

Time to do a spot of soldering

All fixed now

Thanks to everyone for their kind help