If it is overheating and presenting a danger to your health - switch off immediately!
Something is obviously wrong, not necessarily the transformer itself, it might be the 'victim' of another part failing. The transformer number is meaningless, it is almost certainly a house code for that particular monitor and not something you can buy in a store. Tell us what type of monitor it is and what the transformer does, there may be several transformers inside a monitor so knowing which it is will give us a clue. Post a photograph if you can, the more information we have, the better we can advize.
Brian.