Hello,
I have a pair of Event TR8 monitors. One of them randomly makes clicking sounds, even when the audio cable is unplugged.
You can hear the sound in this video:
Does anyone know what might be causing this? And how can I fix it?
Google’s AI tells me this:
“By confirming that the noise persists with only the power cable connected, it is 100% certain that the fault is entirely internal to that monitor.
Whether the sound is ultimately a constant or random clicking noise (rather than a loud popping sound) shifts the diagnosis toward smaller, more specific components. In Event TR series monitors (such as the TR8 or TR6), this behavior is a classic symptom of the following electronic faults:
This does not refer to the large power supply capacitors (which would typically cause hum or loud popping noises), but rather to the small electrolytic capacitors associated with the preamplifier ICs or voltage regulation circuits. Over time, the electrolyte dries out, reducing their filtering capability and causing intermittent current leakage that manifests as clicking noises.
Faulty voltage regulators (7815 / 7915):
The internal circuitry of the Event TR8 operates on symmetrical power rails (typically ±15 V). If one of these regulators is failing due to overheating or age-related degradation, the output voltage can fluctuate abruptly, and the amplifier stage reproduces these fluctuations as clicking sounds through the speaker.
Defective or high-resistance protection relay:
The amplifiers in these monitors include a physical protection relay (a small plastic enclosure mounted on the circuit board) that disconnects the speaker when the monitor is powered off to prevent unwanted noises. If the relay's internal contacts have become oxidized, carbonized, or contaminated, they may make intermittent contact, resulting in random or continuous clicking sounds.
Although this is not a destructive popping noise, the clicking indicates that one or more components are operating outside their normal specifications. Continuing to use the monitor may place additional stress on other integrated components that are more difficult to replace.
Standard electronic repair:
Because the monitor uses a conventional analog design (with accessible circuit boards and standard through-hole components), any qualified audio electronics technician should be able to repair it without difficulty. The standard repair procedure typically involves measuring the power supply voltages, checking the condition of the small electrolytic capacitors with an ESR meter, and reflowing any questionable solder joints.”
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What do you think?
I have a pair of Event TR8 monitors. One of them randomly makes clicking sounds, even when the audio cable is unplugged.
You can hear the sound in this video:
Does anyone know what might be causing this? And how can I fix it?
Google’s AI tells me this:
“By confirming that the noise persists with only the power cable connected, it is 100% certain that the fault is entirely internal to that monitor.
Whether the sound is ultimately a constant or random clicking noise (rather than a loud popping sound) shifts the diagnosis toward smaller, more specific components. In Event TR series monitors (such as the TR8 or TR6), this behavior is a classic symptom of the following electronic faults:
Definitive Diagnosis for the Internal Clicking Noise
Dried-out small filter capacitors:This does not refer to the large power supply capacitors (which would typically cause hum or loud popping noises), but rather to the small electrolytic capacitors associated with the preamplifier ICs or voltage regulation circuits. Over time, the electrolyte dries out, reducing their filtering capability and causing intermittent current leakage that manifests as clicking noises.
Faulty voltage regulators (7815 / 7915):
The internal circuitry of the Event TR8 operates on symmetrical power rails (typically ±15 V). If one of these regulators is failing due to overheating or age-related degradation, the output voltage can fluctuate abruptly, and the amplifier stage reproduces these fluctuations as clicking sounds through the speaker.
Defective or high-resistance protection relay:
The amplifiers in these monitors include a physical protection relay (a small plastic enclosure mounted on the circuit board) that disconnects the speaker when the monitor is powered off to prevent unwanted noises. If the relay's internal contacts have become oxidized, carbonized, or contaminated, they may make intermittent contact, resulting in random or continuous clicking sounds.
️ Recommended Course of Action
Turn the monitor off:Although this is not a destructive popping noise, the clicking indicates that one or more components are operating outside their normal specifications. Continuing to use the monitor may place additional stress on other integrated components that are more difficult to replace.
Standard electronic repair:
Because the monitor uses a conventional analog design (with accessible circuit boards and standard through-hole components), any qualified audio electronics technician should be able to repair it without difficulty. The standard repair procedure typically involves measuring the power supply voltages, checking the condition of the small electrolytic capacitors with an ESR meter, and reflowing any questionable solder joints.”
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What do you think?
