Good day everyone. I recently bought a stack of non working receivers. One was a Yamaha RX-V381 that when turned on said internal error. I got into the service menu and retold it what model it was. This only sticks until unplugged. When it's plugged back in it defaults to the internal error and I have to go back and remind it what it is again. In the service menu, it also says eeprom:ng, hdmi:ng and bt:ng. There's no life that I can find in the hdmi in or out and bluetooth doesn't show up when trying to search for the receiver. Just wondering if anyone has a suggestion as to where I should start? I also have a Pioneer VSX-1022-K that needs work on the amp board but that's a whole mother project. Thanks in advance for any advice.
Last Edit: Jan 1, 2019 13:58:17 GMT -5 by adkinsc20
Yes, I've tried that also, I forgot to put that in the first post. It still has C1-1 All:ng C1-3 hdmi:ng C1-8 eeprom:ng C1-10 bt:ng. I have and can, for the most part, use a digital multimeter. I can read schematics for the most part also.
Last Edit: Jan 5, 2019 12:00:44 GMT -5 by adkinsc20
mastertech: Merry Christmas to you too. Not many holiday people around any more.
Dec 26, 2018 14:37:50 GMT -5
stridsvognen: Merry christmas everybody...
Dec 24, 2018 19:10:58 GMT -5
mastertech: Sounds nice. Would love to have many more pictures.
Oct 20, 2018 20:31:04 GMT -5
greg1292: Greetings from Denmark. Lots of ideas knowledge and bucket list. Gabor boards looking very nice indeed
Oct 20, 2018 16:38:34 GMT -5
kevin5418: Anyone has the Velodyne hgs12bg MPS board schematic ? thank U
Oct 6, 2018 0:58:34 GMT -5
mastertech: According to the SM ic711 must be installed with the firmware already in it. It can then later be upgraded. The correct ic is around 50 dollars. If you installed a blank ic it will not work.
Aug 19, 2018 20:01:39 GMT -5
ralph: Hello mastertech, sorry for the delay, if I replaced that IC, I was with short circuit, blocked the 3.3 volt regulator, put a new one but still do nothing, what could I do? Thanks for the reply
Aug 18, 2018 21:48:51 GMT -5
mastertech: Did you replace ic711?
Aug 12, 2018 18:55:42 GMT -5
mastertech: Just to clarify you replaced ic711 (STM32F101ZG), correct?
Aug 10, 2018 20:58:16 GMT -5
ralph: Hello, Mastertech, I'll send it to you
Aug 10, 2018 18:58:46 GMT -5
mastertech: I have no idea on the context of what you posted. Link me the manual and I can look it over.
Aug 8, 2018 20:05:37 GMT -5
ralph: This is what the manual says:
Aug 8, 2018 19:44:59 GMT -5
mastertech: Nope. That is only to update a preprogrammed CPU. It needs basic firmware just to function. Without that it does nothing. You most likely purchased a blank CPU. The service manual would be more specific but I do not have one for that model.
Aug 8, 2018 19:35:18 GMT -5
ralph: Hi, mastertech thanks for responding, but still without firmware Denon should appear information on-screen, so then update it via USB?
Aug 8, 2018 19:25:45 GMT -5
mastertech: Most likely has firmware.
Aug 8, 2018 18:13:28 GMT -5