Idk how many of you remember my other post about my Sparton 5048 I plan to restore. I’m not planning on restoring it any time soon but it is definitely a future project. Thinking of just gutting the whole thing and rebuilding it all except for the tubes, transformers and speaker since likely all those caps and resistors are done. 77 years old lol. This capacitor here is clearly leaked everywhere and is fricked and may be the main reason for the super loud hum, as well as the automatic volume control system it has. Many of you didn’t seem to realize how loud this hum is. I’m not talking about a slight “mmmm” no, i mean ear-killing AAAAAAAAAAAA coming from it. It’s screaming 60hz like hell. I know I shouldn’t turn it on or else I’ll risk breaking other good parts like the tubes or the speaker.
I think they look like those little fireworks that spin around on the ground and shoot sparks and smoke everywhere.
Is this a paper capacitor? Diodegonewild replaces them on things he repairs on his youtube channel.
Not sure but I think these can short and catch fire, so suggest you replace any paper capacitors on this.
Where are you getting 400v?
Fittingly, this style is actually *called* a firecracker capacitor.
Going by the 150 W.V. (“Working Voltage”) rating on the cap, and the schematic for the Sparton 5048, one of these should do the job: https://www.tubesandmore.com/products/capacitor-ce-mfg-160v-4747-f-electrolytic
That was referred to as the AA-5 ( all American 5)
Hook it up backwards and it will be a bomb.