Question about JVC RX-317 Receiver
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Posted on Jan 02, 2017
SOURCE: JVC RX-ES1SL 5.I
1: In most cases there are two FET`s gone you can use a normal IRF 530 but cut the heat sink from the FET do it with a pincer not with a grinding machine! (static electricity!). Before you switch on the set pay attention for the following parts!
2: The two coils that are mounted under the metal housing on the main board look of they have a other color if so they are burnt Check also the SMD parts under the main PCB.
3: The two SMD Elco`s that are mounted on the little PCB they have in most cases a high ESR. The value must be under 1 I thing that all the troubles you can have with this set are coming from this two elco`s (100uF 16 volt.)
4: look for a short cut on this little PCB pay attention to the two SMD gates. Measure the S/C over the +5 and +12 volt lines and check both PCB visual.
5: You must bring in a lot of heat to remove the both IRF`s use a good flux and do not fear the heat they can have it.
Because you must use a big Iron there is the danger to damage this aluminum layer check visual after you have solder the two FET`s all the connection with the smaller parts measure them with a Ohm meter. This was the fault in mine case there was a open connection to one of the gates of the FET`s
Posted on Jun 03, 2008
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