Re: Onkyo TX-NR636 Protection Mode - thermal issue?

Hi everyone,

Thanks for your comments above and for your contributions to other Onkyo threads in this forum - it gave me some good context diving into this.

To give you an update, I have some progress (I'm saying that tentatively, not having used speakers for an extended period yet).

I checked the transistors on the heat sink and the adjacent resistors on the main board, as recommended in here and other threads. I couldn't find any fault with these.

However, I removed...

Hi folks,

I have a Onkyo TX-NR636 that goes into Protect mode (the display lights up upon pressing on/standby, but 'clicks' off within 2-3 seconds).

Using the Service Information Mode (in the service manual attached, page 11), the service information display shows: T -42C 17 04

This indicates the power off cause is 'Thermal Protect' and the temperature reading is negative 42 degrees celcius.

Using the instructions for 'Confirmation of output voltage and thermal sensor' on p 12 of the service manual, the display shows: >00 -47 F:x...

Re: New Members - please post your introductions here

Good Evening all,

I'm here because I'm trying to repair an Onkyo stereo of mine. I'm new to circuitry and electronics, but thought I could use this project as an opportunity to start a new hobby.

Cheers