A communication error with Pulsar2 (brd 0) has occured.

[astroman]

I can confirm @dynamixii ˋs comments: the cards are are true challenge without proper repair gear.
Myself... I almost ruined one, while „learning on the job“
This is at least a 4 layer board and one can easily damage the 2 inner layers if pulling out parts not heated up sufficiently or applies to much force, etc etc

His offer of a complete recap is (in fact) fair and reasonable, and it‘s the proper way of doing it.
Those cap connections are supposed to be as short as possible which means remove old, clean up, insert new.

[sandrob]

It's not that I don't want to help you, It's that I question your ability to do the repair if you don't even know how to identify a transistor. It's really easy to do damage to the card & you may do more damage than good. All the parts are labeled clearly on top of each component, the power mosfet that I mentioned above is the one that is soldered directly to the large metal plane which will take a lot of heat & flux to remove. The others have posted the pic of it above. Also, the boards need to be cleaned afterwards, preferably in an ultrasonic, so if you leave all that flux behind, can do more damage than good. You may be better off selling it for parts as is on ebay because if you damage the card it will be worth a whopping zero.

Thank you for the tips. My friend is one of the best service technicians in the country. He is doing repairs for several of the largest music equipment stores. I had told him to change all the capacitors on my Pulsar and he had already done so. However, when I saw that Pulsar was still not working, I simply went to the store, bought RME and gave up Pulsar.
If I hadn't received this answer on the forum now, it wouldn't have occurred to me to go and fix it, because I don't need Pulsar anymore. Eventually I can still tell him to change that voltage regulator and that’s it. If the Pulsar works after that, I can keep it as a backup for RME. If it doesn't work, I can throw it in the trash. It's not worth investing in.
BTW: You can see how my friend works in these pictures. It is a repair of a watered mixer.

[dynamixii]

Have him check for any broken traces, replace the transistor & also check for any legs on the dsp that may not be attached to the pads.

Good luck!

[sandrob]

Have him check for any broken traces, replace the transistor & also check for any legs on the dsp that may not be attached to the pads.

Good luck!

Thanks