Various problems. Receiver operation is normal. Intermittent excessive CRT brightness. Vibration sensitive. Intermittent negative brightness control voltage. Resolder cracked joints on VR-C unit. Noise is most often heard in FM broadcast band. Receive problems from MHz, and MHz. No RX at all above 30 MHz, all modes. Green LED is off. If the PLL section has recently been serviced, check for loose coaxial connectors. Spread out center conductor at N-connector on rear panel. Caused by forcing on a PL connector.
Straighten center conductor or replace connector. Warn customer. No RX, all bands, all modes. Green RX light not on, radio very quiet. Display and front panel operation are normal. Power supply voltages to PLL unit. If okay, check reference oscillator output on PLL B unit. If ref. No HF RX at all. Not PLL unlock. Hi-Z antenna switch on rear panel is in the wrong position. Less Common Causes :.
No HF 2nd L. XX MHz. Blank screen when receiving TV signals in display mode. Squelch erratic. AF gain control and squelch control interact. RX may be low. Comments No comments yet. Be the first! Add Comment. Notify me of new comments via email. I have read and agree to the terms and conditions. By submitting a comment, you are declaring that you agree with these rules: Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy. The administrator has the right to edit, move or remove any comment for any reason and without notice.
0コメント