Berning-TF10-pre-sch维修电路原理图

1、 For units set up for 240 volts, a 50 ohm-10W resistor is inserted in line with the incoming mains power. CAUTION: Dangerous voltages are present inside the TF-10. Servicing should only be attempte。

2、 The 6LF6 output tubes have become extremely expensive and hard to find. The Svetlana EL509 is similar in characteristics, and with a substantial amount of work the EA-2100 can be changed to take 。

3、 The failure prone parts in the TF-12 are the optical encoder volume control, 1Meg resistor in the mute time out (located on the power supply board), the HER602 diodes in the power supply, 470 F c。

4、 The failure prone parts in the EA-2101 are the four 150K resistors in the feedback sensing. Early versions used carbon film resistors that tended to increase in value, or go open completely, caus。

5、15C50Kx2 D V12/25 15C50Kx2 D V12/25 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w 5.62K smt 1/4w。

6、MJD340 MJD350 MJD340 MJD350 +15VAMP +15VAMP -15VAMP -15VAMP -15VAMP +15VAMP -15VAMP +15VAMP -15VAMP +15VAMP -15VAMP +15VAMP Diode 1N914 SMT 5550 5401 5550 5401 5401 H3A.C H3A.J 5401 82pF .0047 82pF H3。