Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: RestoredSparda on March 31, 2023, 07:10:29 AM

Title: Loud hum and light show [resolved]
Post by: RestoredSparda on March 31, 2023, 07:10:29 AM

Made a rookie mistake and did a listening test after passing voltages and resistances without triple checking no joints were missing solder.

Sounded fine with some crackles, figured there was a joint I forgot to solder. Before I could turn it off there was a loud pop and the power tibe flashed white. I turned it off and soldered the missing joint at (18 L).

Again passed voltage and resistance checks perfectly but there is now a constant loud buzz through headphones and more alarmingly loud popping in the headphones when pulling out or putting in the headphone jack. When there is a loud pop the power tube also flashes bright white.

Any idea what I blew up? Fried the power tube? Damaged the transformer?  Thanks for any help!

Title: Re: Loud hum and light show
Post by: RestoredSparda on March 31, 2023, 08:40:31 AM

Please disregard. After some inspection I found a very sneaky bad solder joint on the lower headphone jack terminal.  Everything is good to go.