Hey All,

Has anyone got a spare, working UM 1233 RF modulator they are willing to part with?

I'm currently ressurecting a car boot sale find - an old EP128 (board only) that had been _very_ abused.  I've got it working but the RF ouput is making a buzzing noise on the picture and all the colours appear wrong (background on the flashing EP logo at first boot is a fuzzy blue colour) and all the text on the screen appears to be 'bleeding' a fair bit like it's off channel.  Tried everything to get it looking better and now I wonder if the RF modulator is broken..

EP appears to work fine apart from that - I'll attach a picture for you experts to take a look at!

Also, Had to replace a missing LM1889 IC - I think there should have been a resistor across 2 pins of the IC if I recall - anyone got any info about it?  I'll post a pic of the board too..

Thanks for any help you guys can give me!

Mark.

Hi Zozo!

Hope you are well friend!

I wanted to get the EP as original as I possibly could - and a new modulator seemed like a must have

I have tried the pot next to the modulator to no avail - I guess my next job will be to scope the video signal into the modulator to see if it looks good - but I think that the modulator is bad (the rust might be the cause!)

I may buy that one on ebay and replace it anhyhow.

I need also to get a 128k upgrade for it - do you have any for sale?

I will also need to look for a case to put it in, but I guess that will be very hard to find..

The power side of the EP was completely broken - it was much easier (and a better choice) to replace it with an EPower module - no need for a heatsink (which I don't have either and may need to try and make something)

If you have any parts - or know anyone with parts - a case, heatsink etc. I would love to find these.

Thanks Zozo!

Mark.