Acetronic (Radofin 1292) MPU-1000 Composite MOD
This Video Composite MOD needs some work unlike other similar consoles, you need to remove a resistor and insert a trimmer, otherwise the Video Composite output signal is really bad.
Works that need to be done:
- Remove the RF Modulator (remove it completely)
- Remove the 4.7k Resitor (see photo)
- Solder a 22k Trimmer between the resistor hole (hole side to pin 8 of the TEA 1002/PE1X) and the ground, the third pin of the trimmer is the Video Composite output. (see photo)
- Solder a wire for the Audio output. (see photo)
- Use the same hole of the RF cable for the new video and audio cable.
Before closing everything i recommend to adjust the trimmer for the best Video output.
Gallery of the Video Composite MOD:
Categories: Projects / Repairs, Today, Various
Hi can you give more details with connecting Av cable to the acetronic please
Thank you this A/V mod works brilliant
This is great, thanks !
Will a 20k trimmer be ok? I’m struggling to find a 22k in the UK.
Also, in the 7th image, the silver wire coming out of the black sheath to the trimmer, is that solder hanging down connecting to the ground?
@Andy Young
Did you get the details, I am struggling with this
Digging up a really old post here, but I did a variant of this composite mod the other day (I used an 120ohm resistor inline with the video signal instead of the trimmer, it works well). The issue is actually with the audio. I think the point at which the audio is sourced is wrong: we get the square wave sound but there is no noise channel, which is needed for explosions in Invaders, Air Sea Attack, etc. Sadly I have no idea how or where to start looking to fix this.