Do you have a decent DMM (digital multimeter)? One that can measure resistance (Ω), voltage and a diode mode (look for a symbol of an arrow with a line on the "pointy end" of the arrow.)
I can suggest watching [link|https://www.youtube.com/c/12voltvids/videos|12voltvids] on YouTube, he is a great guy and has a LOT of videos, also on diagnosing some audio equipment. The surge that happened as a result of the power outage, blew something inside the receiver, and you'll need to replace that (or those) part(s). Most likely some capacitors (the only obvious way to detect that, without an ESR meter, is to look at the top of the electrolytic capacitors to see if it's blown), and quite possibly one or more mosfets in there. You need to measure the mosfets for shorts.
***NOTE!!! Some of the capacitors in the power part of the receiver are capable of holding hundreds of volts with fairly high farad ratings, which are DANGEROUS! Never touch the leads of the capacitors without making 110% sure that they are completely discharged! A multimeter can read the voltage contained in the capacitor, in the Voltage reading mode.***
PS! I'm also a Norwegian ;)
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[image|2749691]
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See if you find this setup on your board. Red are the regulators and Blue are the corresponding inductors.
Do you have a decent DMM (digital multimeter)? One that can measure resistance (Ω), voltage and a diode mode (look for a symbol of an arrow with a line on the "pointy end" of the arrow.)
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I can suggest watching [link|https://www.youtube.com/c/12voltvids/videos|12voltvids|new_window=true] on YouTube, he is a great guy and has a LOT of videos, also on diagnosing some audio equipment. The surge that happened as a result of the power outage, blew something inside the receiver, and you'll need to replace that (or those) part(s). Most likely some capacitors (the only obvious way to detect that, without an ESR meter, is to look at the top of the electrolytic capacitors to see if it's blown), and quite possibly one or more mosfets in there. You need to measure the mosfets for shorts.
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I can suggest watching [link|https://www.youtube.com/c/12voltvids/videos|12voltvids] on YouTube, he is a great guy and has a LOT of videos, also on diagnosing some audio equipment. The surge that happened as a result of the power outage, blew something inside the receiver, and you'll need to replace that (or those) part(s). Most likely some capacitors (the only obvious way to detect that, without an ESR meter, is to look at the top of the electrolytic capacitors to see if it's blown), and quite possibly one or more mosfets in there. You need to measure the mosfets for shorts.
***NOTE!!! Some of the capacitors in the power part of the receiver are capable of holding hundreds of volts with fairly high farad ratings, which are DANGEROUS! Never touch the leads of the capacitors without making 110% sure that they are completely discharged! A multimeter can read the voltage contained in the capacitor, in the Voltage reading mode.***
Hi @mikaels
Do you have a decent DMM (digital multimeter)? One that can measure resistance (Ω), voltage and a diode mode (look for a symbol of an arrow with a line on the "pointy end" of the arrow.)
I can suggest watching [link|https://www.youtube.com/c/12voltvids/videos|12voltvids|new_window=true] on YouTube, he is a great guy and has a LOT of videos, also on diagnosing some audio equipment. The surge that happened as a result of the power outage, blew something inside the receiver, and you'll need to replace that (or those) part(s). Most likely some capacitors (the only obvious way to detect that, without an ESR meter, is to look at the top of the electrolytic capacitors to see if it's blown), and quite possibly one or more mosfets in there. You need to measure the mosfets for shorts.
***NOTE!!! Some of the capacitors in the power part of the receiver are capable of holding hundreds of volts with fairly high farad ratings, which are DANGEROUS! Never touch the leads of the capacitors without making 110% sure that they are completely discharged! A multimeter can read the voltage contained in the capacitor, in the Voltage reading mode.***
PS! I'm also a Norwegian ;)