UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Metcal RF soldering base unit playing up.

Chris Wilson · 16th Sep 2018, 7:32 pm

After singing this RF soldering station's praises here and elsewhere it has decided after many years good service to play up. Whilst tips et hot, probably to full temp, they do not retain heat when touched to joints. I have tried several tips, one brand new and my RF tweezers on their own RF co-ax seem to do the same. I suspect whatever part of the circuitry is supposed to maintain heat when a junction is taking it from the tip is not working properly, but that's merely a guess. It's an earlier version than some I have seen mentioned in here, a
STSS-P2V-O2 but I would imagine the schematic of the later ones will be similar unless anyone has the correct diagram / service manual?

http://colinoflynn.com/wp-content/up...MX-500P-11.pdf

Any ideas where to look and has anyone had this issue themselves and fixed it? Thanks

16th Sep 2018, 7:32 pm	#1
Chris Wilson Heptode Join Date: Nov 2011 Location: Whitchurch, Shropshire, UK. Posts: 612	Metcal RF soldering base unit playing up. After singing this RF soldering station's praises here and elsewhere it has decided after many years good service to play up. Whilst tips et hot, probably to full temp, they do not retain heat when touched to joints. I have tried several tips, one brand new and my RF tweezers on their own RF co-ax seem to do the same. I suspect whatever part of the circuitry is supposed to maintain heat when a junction is taking it from the tip is not working properly, but that's merely a guess. It's an earlier version than some I have seen mentioned in here, a STSS-P2V-O2 but I would imagine the schematic of the later ones will be similar unless anyone has the correct diagram / service manual? http://colinoflynn.com/wp-content/up...MX-500P-11.pdf Any ideas where to look and has anyone had this issue themselves and fixed it? Thanks __________________ Best Regards, CW. 2E0ILY