A week and a half ago I bought a Thomson CM36512 VI monitor locally, which is apparently the NTSC version of the Thomson-made Commodore 1901. It's a Commodore 128 monitor, meaning that it has inputs for composite, chroma/luma, CGA-compatible RGBi, and monaural audio. I don't actually have a C128, but with a C64U plus multiple RGBi and composite systems it was a great find.

When I started it up with my Laser 128 it seemed to work on both analog and digital inputs, but brightness was being weird/inconstant and the speaker crackled whenever I touched it, so I decided to do a recap and clean/lube the pots. I ordered the C1901 kit from Console5, replaced the RIFA and all the electrolytics 100uF and up, and it's beautiful now. Predictably as the NTSC version it's monochrome to a PAL source, but all four inputs look great otherwise.

I even printed a replacement for the missing front cover, though it's a bit false advertising.

This isn't just to talk about how pleased I am with the project though. I'd also like to give some advice to anyone who gets this monitor. It really is almost precisely the same as a C1901. The board revision on mine is 606, which seems to be intermediate between the 510 and 701 documented on the Console5 wiki.

The 1901 service manual will serve you well, as will the Console5 cap kit. The only significant difference is in the video riser card: being NTSC rather than PAL it's a completely different board with different layouts and components. It has the following electrolytics. The ones marked with * do not have 1901 equivalents so you'll need to get them in addition to a 1901 kit.

NTSC Riser Card: Rev 606
CC04* 16V 10uF
CC07 50v 1uF
CC10 10v 100uF
CC12 25V 4.7uF
CC25* 50v 1uF
CC34* 50v 1uF
CI01* 10v 100uF
CI03 40V 2.2uF
CI06 10v 220uF
CI11* 50v 1uF

Like the 1901 it has a SCART-ready board, but a weird backward connector that you can't directly put a typical right angle header on. I think I found a reverse one on Aliexpress and will see how it fits once it arrives. I don't presently have any SCART output, but since I gather the mod lets the 1901 accept analog RGB with Composite sync I'm hoping it will accept input from my IIgs with an adapter cable.