Realisitic
TRC-476
Documentation Project
CBTricks.com
TROUBLESHOOTING Hints
Symptom |
Probable Cause |
Remedy |
Unit does not work at all |
1.
Defective power switch VR101 |
1.
Replace |
No output from speaker at all |
1.
Defective external speaker Jack |
1.
Repair or Replace |
No noise on speaker |
1.
Measure all the voltage of Q101, Q102, Q103, Q104, Q105, Q106, Q107,
Q112 and IC201, IC202 with voltage chart. |
1.
Replace |
Squelch does not work |
1.
Defective VR201, RV203, IC201 |
1.
Replace defective components |
No modulation |
1.
Defective microphone |
1.
Replace |
LED meter does not work |
1.
Defective D212, D213, D214, D215 |
1.
Replace |
LED display does not work |
1.
Defective RED wire fuse |
1.
Replace |
P.A does not work |
1.
Defective SW9 |
1.
Replace |
Channel selector does not work. |
1. Defective IC501, SW2, SW5, SW4, SW5, SW6, Q503, Q504 |
1. Replace |
RF gain does not work |
1. Defective VR102, D101, D103, D104 |
1. Replace |
ANL does not work |
1.
Defective SW10 |
1.
Replace |
NB does not work |
1.
Defective SW1 |
1.
Replace |
CH9 does not work |
1.
Defective SW2 |
1.
Replace |
Weather radio does not work |
1.
Defective SW7 |
1.
Replace |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.