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Jeff Policky
Jeff Policky, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 2425
Experience:  Yamaha Gold, Suzuki Gold, Honda Bronze, Polaris Bronze, BRP
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Yamaha RX-V3800 Receiver:- power up problem. Periodically would

Customer Question

Yamaha RX-V3800 Receiver:- power up problem. Periodically would not power on when operating front switch and or remote. Gradually got more frequent and now will not turn on at all. Checked all hints from user manual but to no avail. Capacitor maybe?
Submitted: 2 years ago.
Category: Motorcycle
Expert:  Louie replied 2 years ago.
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multimeter and even a soldering iron? Equally important, could you make use of the repair/Service Manual or at the very least, the schematic diagrams?
Customer: replied 2 years ago.
Yes and Yes
Expert:  Louie replied 2 years ago.
Great on the DIY. Locate the standby power supply board. Preliminary tests for the presence of:• standby +8.7V at bridge diode D11;• power On trigger +0.8V at base of Q2;• +5MV at resistor R8;• PDET +5.4V at anode of D4. Please post back results / observations of the above once tried. A friendly reminder: voltage measurements by its very nature requires that the Yamaha be plugged in and therefore LIVE! Please exercise due care and caution.
Customer: replied 2 years ago.
Middle of night here so will try during day
Expert:  Louie replied 2 years ago.
I understand and post an update when able.
Customer: replied 2 years ago.
Expert:  Louie replied 2 years ago.