morley SLDW help

[morley]

Hello my friends, I would very appreciate if you could help me. I bought vintage Morley SLDW very cheap and ... it is not working I've opened it, cleaned it and ... diodes are missing. Here are the pictures:






On 2nd and 3rd picture you can see that diodes are missing. Can anyone please give me an advice what kind of diodes I should put and how should I orientate them because I can't find a scheme?

My second question is: there are some new and some old led diodes, and they have different shine intensity, so I would need an advice what kind of led diodes I should buy.

Thank you all!