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Search: Posts Made By: Andrealikescaps
Forum: Troubleshooting Audio Equipment 12-23-2021, 10:15 PM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Re: Yamaha RX A3020

Fascinating.
At 50 degrees C, DSP1 (IC911) is happy, everything works,
at 45 degrees C, it stops.
Regular and repeatable.
Using a thermostatically controlled heat gun, I baked the chip at 150...
Forum: Troubleshooting Audio Equipment 12-23-2021, 03:43 AM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Re: Yamaha RX A3020

C2.1 on this one is network check. Shows all ok so long as you connect it to a network switch.
C1.7 however is more interesting as it shows NG.
BUS DSP1 is reporting an error then.
IC911 on the...
Forum: Troubleshooting Audio Equipment 12-23-2021, 03:33 AM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Re: Yamaha RX A3020

Thank you for your questions.
I'm testing with the tuner input.
I have access to a function generator.
I have a scope.
Not checked pre-outs.
Display output is normal, no errors, not in fault...
Forum: Troubleshooting Audio Equipment 12-09-2021, 07:22 PM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Re: Yamaha RX A3020

No BGA's fortunately.
Forum: Troubleshooting Audio Equipment 12-09-2021, 03:34 AM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Re: Yamaha RX A3020

Thanks Victorcas, no sign of liquid spills, but just in case I sprayed out the boards with IPA and compressed air.
Removed quite a bit of dust but unfortunately the problem remained unchanged...
Forum: Troubleshooting Audio Equipment 12-02-2021, 03:55 AM
Replies: 12
Views: 1,014
Posted By Andrealikescaps
Yamaha RX A3020

Hello friendly Badcaps community.
I have one of these on my desk today, and I have attached a service manual (https://elektrotanya.com/yamaha_rx-a3020_rx-v3073.pdf/download.html) if it is beneficial...
Forum: Troubleshooting Audio Equipment 12-02-2021, 03:16 AM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

BTW if RME ever get around to reading this post (they said they would when I contacted them), please understand that sharing technical information on your products helps to increase your standing in...
Forum: Troubleshooting Power Supplies and Power Supply Design 12-02-2021, 03:13 AM
Replies: 2
Views: 1,222
Posted By Andrealikescaps
Re: Pioneer Magnetics PM33 5000W switchmode supply

No takers i see, well Meanwell make similar supplies so I will look into shoehorning one in for now, but if anyone in Australia would like to try to repair one of these supplies I'm happy to offer to...
Forum: Troubleshooting Audio Equipment 12-02-2021, 03:10 AM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

"That 1510 preamp IC" was indeed the problem. Replacing it fixed all.
Unfortunately this preamp has left the building jantoman, so it can't pose for a picture, but when another comes in I will take...
Forum: Troubleshooting Audio Equipment 04-02-2020, 07:31 AM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

"That 1510 preamp IC" may be the problem.
Tis an 8 pin package.
Pinouts and recommended circuit attached.
I measure:
Pin 1 Rg1 -9.8VDC
Pin2 -in -9.1VDC
Pin3 +in -9.1VDC
Pin4 V-...
Forum: Troubleshooting Audio Equipment 03-24-2020, 08:27 PM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

Thanks again. I have measured the same voltages at the board as on the Caps can. I know there isn't necessarily a hard connection to the can, but it makes an easy measuring point, besides for a high...
Forum: Troubleshooting Audio Equipment 03-23-2020, 07:40 PM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

Thanks for the suggestions. I've uploaded more photos. No signal on ADAT or analog output on channel 4. All the rest OK.
All the caps except the largest and smallest on the left have around +9VDC on...
Forum: Troubleshooting Audio Equipment 03-23-2020, 05:51 AM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
Re: RME Octamic II input circuit anyone

Thank you Khron, is this photo ok?
Forum: Troubleshooting Audio Equipment 03-18-2020, 05:03 AM
Replies: 15
Views: 2,128
Posted By Andrealikescaps
RME Octamic II input circuit anyone

Hello Badcappers.
I just finished wasting time contacting RME for any useful information on the Octamic II preamp. We have been repairing these for some years (with no help from RME). These are...
Forum: Troubleshooting Power Supplies and Power Supply Design 12-10-2017, 10:15 PM
Replies: 2
Views: 1,222
Posted By Andrealikescaps
Pioneer Magnetics PM33 5000W switchmode supply

Hello friendly Badcaps community. I'm repairing a 5000W switchmode power supply. Pioneer Magnetics are being incredibly unhelpful, so I'm all the more determined to fix it anyway :). Would anyone...
Forum: Schematic Requests ONLY! 10-25-2017, 02:23 AM
Replies: 13
Views: 7,329
Posted By Andrealikescaps
Re: Board view for Asus UX32VD Rev. 2.1 60-NYOMB1100-C02

Hi folks. I've tried those board view files & can't run them in windows and linux using OpenBoardView R534. Any possibility of their being corrupt? I'm just looking for the charge circuit?
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