A used Brimar 5Y3GT rectifier in working order. Better valve testers (such as an AVO) can detect potential insulation breakdown before it occurs that may cause problems in the near future although they have not gone open circuit (or short-circuit) yet.
eBay
Type Full Wave Rectifier. similar 5V rectifier tubes of both higher and lower current: 5V3, 5W3, 5X3, 5Z3, 5U4, 5Z4, GZ32, and GZ34. Platinum Matched (within 1%). Fender Princeton. Strong TESTING.
eBay
NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.
eBay
Raytheon - Yellow Print. Raytheon - Red Print. Type Full Wave Rectifier. similar 5V rectifier tubes of both higher and lower current: 5V3, 5W3, 5X3, 5Z3, 5U4, 5Z4, GZ32, and GZ34. Platinum Matched (within 1%).
eBay
NOS, Supplied in Original Box.
eBay
eBay
JAN CHS 5Y3GT. Sylvania - White. Type Full Wave Rectifier. Platinum Matched (within 1%). Fender Tweed Deluxe. NOS - Strong TESTING.
eBay
Type Full Wave Rectifier. Platinum Matched (within 1%). NOS - Strong TESTING.
eBay