Actually yes, the EU some money for refurb, not new trains.
The Russians didn't magically win the tender, i think it was realpolitik. They manufactured them originally in the first place, they have the means to do the work, and without knowing if the proposals were technically equivalent, Hungary needs to maintain a good relation not only to its neighbors, and fellow EU members, but to Moscow.
Also the trains are not in a worse working condition than the Siemens Combino trams or the Siemens and Alstom technology at Metro 4 line, which also had integration problems during the first months of operation. The problems will be addressed by the russian firm as well as as the western firms addressed those problems.
Well, only if you want to explain away the fact that the Estonians should have won the tender based on the official scoring and criteria. In other words, you are rationalizing. There's a reason why tenders always have a fixed scoring system. And this is it.
Maintaining good relationships with the Russians wasn't part of it, of course. We'll pay them enough for Pask2 (awarded without tendering). But even if not, because enough does not exist, more is always better, if this is the price of a 'good relationship' then we already have a bad relationship with them. I.e. they are blackmailing us. (Of course, it's not the case, but they are probably more willing to pay back than the Estonians...)
No, these problems are not like other problems, though Siemens and Alstrom were also both involved in corruption cases (I mean outside of Hungary), these are more serious and didn't happen with the others. It's not simply only integration problems.
The Russians didn't magically win the tender, i think it was realpolitik. They manufactured them originally in the first place, they have the means to do the work, and without knowing if the proposals were technically equivalent, Hungary needs to maintain a good relation not only to its neighbors, and fellow EU members, but to Moscow.
Also the trains are not in a worse working condition than the Siemens Combino trams or the Siemens and Alstom technology at Metro 4 line, which also had integration problems during the first months of operation. The problems will be addressed by the russian firm as well as as the western firms addressed those problems.