LH Research PSU faulty?

[pentium]

Re: LH Research PSU faulty?

But most likely the cost of the capacitors is less than the cost of a scope.

I don't need it just to measure ripple in this PSU, I have other electronics (some of it tube-based) that I need a scope for anyways.

Anyway, for recapping it is not really necessary.

[tvtech]

Re: LH Research PSU faulty?

Cool...........so you wouldn't use the scope once then, let it collect dust Then defintely it's worth it for you to get a scope. Btw, what kind of tube equipment do you have?I restore and collect old tube radios and tv's,and vintage amps.And yes you should have a scope for recapping,simply so you can check to see how well your new capacitors are working by measuring ripple and make adjustments/repairs to reduce the ripple if necessary.

[pentium]

Re: LH Research PSU faulty?

I got an older Westinghouse tube tv with a spare 17" tube sitting in storage that has a picture that won't spread out vertically, A portable Motorola tube radio that fades in and out every so often...and a few other gizmos related to my Shortwave and CB radios. I also want to test a myth that if you try hard enough, you can actually get a tv image on your scope (seen in an old 50's electronics magazine repair section).

[tvtech]

Re: LH Research PSU faulty?

Cool.....I have a few tube sets..a 1949 motorola 12inch roundie,1957 rca 12inch to name a few.I will post pics latter.Your problem with the westinghouse is the old paper caps,they are leaky,If you have the model number for your set then I may have a schematic and sams folder for your set in PDF.It's good that you have a spare CRT for that set as they are scarce as hens teeth.As for your tube radio the same appies,replace the paper caps.There is a place in canada called just radios, www.justradios.com that sells replacement film and higher voltage electrolytics for tube equipment,They are reasonable I buy from them.I saw that article too but have never tried to do it.

[pentium]

Re: LH Research PSU faulty?

I had a feeling it was the paper caps as the tubes were checking out okay.
I don't need schematics, My gramps used to repair Westinghouse appliances and he has a whole wall filled with Westinghouse service manuals.
I also have two boxes of tubes here and another in Ontario.