List of Chassis Models which are compatible with 37GDA85X
This list is automatically updated as more models are added to CRT Database.
CR-31 Socket
| Pin # |
Assignment |
| 1 |
Focus (G3/G4) |
| 2 |
Keyed Out |
| 3 |
Blue Pin |
| 4 |
Heater (F1) |
| 5 |
Heater (F2) |
| 6 |
G1 Red Pin |
| 7 |
Red Pin |
| 8 |
G2 Red Pin |
| 9 |
Green Pin |
| 10 |
Keyed Out |
CR-31 Datasheet Note: If you only see one assignment for G1 (or G2), it means there is only a single G1 (or G2) grid shared across all cathodes. This is called "common G1" (or "common G2"). In this case, when using a Universal Adapter (UA), you only have to hook up one G1 (or G2) lead on your tester to connect all cathodes' G1 or G2 properly.
Notes
The Samsung-manufactured variant of this tube has the mounting tabs much further back on the frame, which means spacers will be required if this is used as a replacement for the MTC (Matsushita) variant. The vertical deflection coil impedance of the Samsung yoke is different from the MTC, so the yoke will have to be replaced as well. Fortunately, the convergence rings are separate from the yoke assembly.
Sencore CRT Tester Info
| Tester Model |
Heater |
Socket |
Bias |
Video |
| CR-7000 |
6.3V |
5 |
68V |
Video 1 |
| CR-70 |
6.3V |
13/UA |
68V |
VIDEO |
| CR-31 |
6.3V |
- |
D |
N/A |
B&K 490 / 467 Tester Info
| Tester Model |
Heater |
Socket |
G1 Voltage |
| B&K 490 / 467 |
6.3V |
CR-31 |
50 |
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