CAD211AE 9 | Biblioteca audio caryaudio

Replace fuse

Replace tube

section of tubes at a time until

Ground loop

TROUBLESHOOTING GUIDE ________________________________________

Tube fuse blows

If noise is in one channel

of 100 mA

Replace bad interconnect cable

noise

Shorted tube (300B &

on AC cord to float the ground

replace output tube

Install 2-pin adapter

If high or fluctuating rapidly,

300B tube with high plate

845 have separate fuses.)

speakers

Replace the noisy tube.

of interconnect

current too high

Intermittent or poor connection

position. Obstruction of the top portion of the amplifier will result in the tubes overheating.

readjust to proper bias setting

Line voltage surge

Never remove or insert the AC plug when the unit is on or the AC power switch is in the "ON"

"Popping" or "Spitting"

Noisy tube

Check bias of 845's. If high,

REMEDY

AC fuse blows

Check bias of output tubes

through the speaker, swap one

SYMPTOM

CAUTION

the noise swaps channels.

CAUSE

Hum or "Buzzing" in