Hi Les, as a first step, I would disconnect the speaker cables in the Technics su-x501 and test if the same thing happens, if so, there could be a problem with the power supply or also with the speaker output
If it does not turn off, then I would start checking the speaker cables, along the way, in case there is any peeling, which could cause overheating
Once the cables were checked, I would connect the speakers one by one and test with each new reconnection until the source of the fault was detected
I hope you can solve the problem
Regards Franco Dosil
Hola Les, como primera medida, desconectaria los cables de los bafles en el Technics su-x501 y probaria si pasa lo mismo, si es asi, podria haber problema en la fuente de alimentacion o tambien en la salida de parlantes
Si no se apaga, entonces comenzaria a revisar los cable de los bafles, en su recorrido, por si hay alguna peladura, que podria generar un recalentamiento
Una vez revisado los cables, iria conectando de a uno los parlantes e iria probando con cada nueva reconexion hasta detectar el origen de la falla
Espero que puedas resolver el problema
Saludos Franco Dosil https://elektrotanya.com/technics_su-x501_sm.pdf/download.html https://elektrotanya.com/technics_su-x501_sch.pdf/download.html
SOURCE: Technics SU-V2 keeps cutting out
An amp will cut out if the output protection circuit kicks in. This circuit compares output power against the preset level. Each channel has it's own, independent protector. There are calculations that can be done, but for a novice the rule of thumb is to "never use a speaker with a power rating less than the amp AND a lower impedance than stated". Typically using a 4 ohm load on a 8 ohm system is inviting disaster. Even if the system does not become a smoke generator, you might notice that though "louder", the sound quality is deteriorated. Many "audiophiles" often hook up some combinations of speakers to have "surround" without really understanding that the collective impedance actually changes (generally lowers).
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check that power amplifier rating(how many watt)must be more than total speaker rating by 20% at least..
exampel:if speakers watts are 100 watt-amplifier watt must be 120 watt.
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its better to buy desame brand of your unit for compatibility sake...
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Is this happening in a regular pattern. If so please check from the mains power section.Check from the plug, the socket, use another outlet if possible to check. If the faultt recurrs, then you willneed to open the set when it trips off, check all the connectors, the main PCB for any signs of bad joints caused by dry soldering in heating sections. If so use a good iron to resolder these sections bbut attempt only if your familiar with these circuits. Next notice if there is any excessive heating when it is cutting off, if so reduce the treble and bass to confirm any transcient noise running the amp.Use another source to recheck if the noise is coming from the present one. I hope this helps. Good day
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