Best way to fix this weeping heating pipe soldered corner join

[snowscreen]

Hi,
Just moved into a property and after a few days noticed the boiler pressure had dropped from 1.5bar down to 0.3

I’ve found a heating pipe going to a radiator downstairs has a weep/drip when the heating is on

Any recommendations for fixing this, other than having someone come in to repair the joint?

 

[terryplumb]

That joint is soldered to the pipework. System needs to be drained ,the joint removed and a new one soldered on. If that is not something you can do call a plumber.

 

[CountryFan]

As above and sooner rather than later, especially if it's only flux holding it