Before you call a doctor or an exorcist, verify that you're using your shortwave receiver under normal condition. There are several factors which affects reception of whortwave programs and signals.
1. Check for the time and frequencies. Depending on your country and location, all Shortwave time zones are based on World Time in UTC or GMT ("Universal Time Coordinates" or Greenwich Mean Time") In my country (Philippines, Asia) for example, we are 8 hours advanced from World Time. You can check your time zones and regions using a world map.
2. Check for propagation and band conditions/ openings. During daytime higher frequencies such as 9 -21 Mhz are active, while nightime frequencies are the lower bands such as 3 - 9 Mhz. Daytime and nigthime divider frequency is about 10 Mhz, that means you might receive signals under most conditions during daytime and night time. Check some technical books on amateur radio operations or magazines for radio reception. It might be worthwile to study books or materials on receiving international broadcasts stations before you can receive good or adequate shortwave signals. This might become your hobby too, "DXing" or receiving distant stations from across the world. Try it, but it might be an addicting hobby once you're drawn to it!
3. Check if any shortwave station broadcast in any specific time of day at any frequency. Shortwave broadcasts are scheduled based on band openings mentioned above. If for example I'm a Shortwave broadcaster from Asia, and would like to broadcast my signal through the Americas, I would use band openings with respect with time zones. If it is night time in the Philippines, and daytime in the Canada, I would use the higher frequencies to propagate my signal. So I would specify the time for example "8:00 pm Philippine local time, 12 hours UTC, and 7 am in Canada"--- Asia: 8 hours advanced to UTC, Canada--- 5 hours behind to UTC). So shortwave broadcast schedules varies. Broadcast schedules are available on the net, just search for the Shortwave station you want to hear such as Radio, Japan, Radio Australia, BBC, DW (Deutche Welle) Radio in Germany, China Radio International... There's too many shortwave stations waiting to be discovered out there! Check some books and magazines too such as Popular Communications, Monitoring Times, Passport to World Band Radios, World Radio and TV Handbook, etc. You may want to check if any station would be broadcasting in your dialects as most of these mainstream and regular broadcasters are multilingual.
2. Check your location. If you are using your radio indoors, shortwave signals might not entering your homes or offices due concrete walls and metal railings or fence. There are many factors which blocks radio waves especially in the HF or lowetr bands. Try receiving AM (Mediumwave) first. If it cannot receive any AM station, then you would not receive any Shortwave signal at all, even if you extend fully the telescopic whip. If you cannot receive AM or Shortwave signal indoors, try using your receiver outdoors.
2. Check for local interference. Your receiver might be receiving interference from noise generating gadgets such as PC monitors, TV sets, faulty wall adapters or switching power supplies, motor operated appliances such as washing machines or vacuum cleaners, flourescent lamps, etc. Try turning off or unplugging each of these mentioned gadgets to see if they are the cause. Faulty house wiring or powerline noise might also cause some interference noise which could drown shortwave signals, verify this with your local electrical technicians.
3. Check your radio's settings. Depending on the radio that you use, there might be settings such as attenuator or RF gain, be sure that attenuator are set to zero or turned to off, and RF gain to high. Attenuator must be turned to minimum or OFF position, unless you are receiving too much signas from nearby radio stations. Setting attenuator to mid or high position will attenuate most weak signal, and only those strong local stations will pass through. Setting too much attenuation will prevent you from receiving any station at all. Same with RF Gain, always set it to highest gain setting unless you are receiving too much signals which might overloads your shortwave radio.
4. If these troubleshooting efforts above doesn't works and you still cannot receive any station, then your radio's front end parts might had burn out due to signal overloads. Burn parts might include one or several transistors or diodes. Let your local service technicians check your radio and solve the problem for you. If your radio is still under warranty, send it back to the store or dealer, and let a qualified technician do the repair.
MANNY DE GUZMAN JR.
SoundMagik Home Studio
Site Creator, Teen Models 2007
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Hi David, do you want to connect the ST-D505 tuner to the TA-D505 amplifier?
You just have to connect an audio cable of two RCA (red and white) from the audio output L and R of the tuner ST-D505 to the input of Tuner in the amplifier TA-D505
Remember to connect the FM antennas and the AM Antenna Loop on the ST-D505 tuner
To listen to it, you have to select Tuner on the TA-D505 and enjoy the favorite radio stations
I hope you have my comments
Greetings Franco Dosil
Hola David, quieres conectar el sintonizador ST-D505 al amplificador TA-D505?
Simplemente tienes que conectar un cable de audio de dos RCA(rojo y blanco) desde la salida de audio L y R del sintonizador ST-D505 a la entrada de Tuner en el amplificador TA-D505
Recuerda conectar las antenas de FM y la Loop Antena de AM en el sintonizador ST-D505
Para poder escucharlo, tienes que seleccionar Tuner en el TA-D505 y disfrutaras de las estaciones de radio preferidas
Espero que te sirvan mis comentarios
Saludos Franco Dosil
https://elektrotanya.com/sony_lbt-d505_d505cd_d505cdm_d505m.pdf/download.html
troubleshoot the issue:
Reset the CD Changer:
Turn off the CD player.
Press the CLEAR button.
Simultaneously, press and hold down the POWER button on the CD player for 60 seconds.
If this doesn't resolve the issue, proceed to the next step.
Check for Error Messages:
If you encounter difficulty playing a disc and receive any of the following error messages, there may be an incorrect setting or a problem with the disc:
NO DISC
DISC ERROR
CD ERROR
TOC ERROR
Refer to the instructions supplied with your CD player to verify model-specific information and troubleshoot the issue.
Internal Component Repair:
If the display issue persists, it might be related to an internal component that requires repair.
Troubleshoot this issue. Here are some steps you can follow:
Check Speaker Connections:
Ensure that the rear surround speakers are properly connected to the Audio/Video (A/V) receiver.
If applicable to your model, verify that the A/B speaker selector is set correctly. If the speakers are connected to the A speaker connection, the selector must be set to the A position.
Test Tone Operation:
Perform a test tone operation to check if the speakers are functioning correctly.
Increase the rear speaker volume or adjust the surround speaker settings to the maximum level.
Speaker Size Settings:
Try selecting a different size (small or large) for the rear surround speakers in the menu.
Surround Sound Mode:
Verify that the A/V receiver is set to a surround sound mode.
For Dolby ProLogic surround sound, ensure that the center-channel mode is set to NORMAL or WIDE.
If your source is a DVD or Blu-ray Disc player, check that surround sound is enabled in the player's menu.
The audio being received must be multi-channel.
Different Surround Sound Mode:
Try setting the A/V receiver to a different surround sound mode.
Source Content:
Verify that the source you are playing is encoded in surround sound.
Note that during periods of mainly dialog, most of the sound may come from the center speaker only, with audio coming out of the rear speakers when there is background or ambient noise.
Factory Reset:
Reset the unit back to factory default settings (consult your operating instructions for model-specific steps).
If applicable, follow the steps for calibrating the appropriate settings automatically after connecting the calibration microphone device.
Speaker Wires and Replacement:
Check and replace the speaker wires if necessary.
Consider connecting a different pair of speakers to see if the issue persists.
If you've tried these steps and the problem remains unresolved, I recommend seeking professional service.
steps to troubleshoot and potentially repair them:
Troubleshooting Low Sound or No Audio from Rear Surround Sound Speakers:
If you're facing audio problems, especially with the rear surround sound speakers, consider checking the following:
Ensure that all speaker connections are secure and properly plugged in.
Verify that the speaker wires are not damaged or frayed.
Check the speaker settings in the system menu to ensure correct configuration.
Inspect the speaker impedance and compatibility with the system.
If you're using wireless speakers, check their power supply and connectivity.
Refer to the operating instructions manual for specific troubleshooting steps.
Flexible Circuit Board Repairing:
If the issue is related to internal components, you might need professional repair. However, if you're comfortable with electronics, consider these precautions:
Keep the soldering iron temperature around 270°C during repairs.
Avoid touching the soldering iron on the same conductor of the circuit board more than three times.
Be gentle when soldering or unsoldering to prevent damage to the conductor.
Important Notice:
To prevent fire or shock hazard, avoid exposing the unit to rain or moisture.
Do not open the cabinet; refer servicing to qualified personnel.
Avoid installing the appliance in confined spaces like bookcases or built-in cabinets.
