Replaced the 2 STK0039 chips , plus swapped the left & right pre-amp drive boards , with no change in symptoms.
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Re: SU8022 , Technics left channel distorted. Schematic please
Here is a scanned schematic... better than nothing.
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Re: SU8022 , Technics left channel distorted. Schematic please
Thank you very muchComment
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Re: SU8022 , Technics left channel distorted. Schematic please
Here's another.Attached FilesComment
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Re: SU8022 , Technics left channel distorted. Schematic please
Thanks LotasComment
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So like the title says, I have an old Stereo Receiver/Amplifier that I picked up from the goodwill, it's a HH Scott Model A510. When I first got it home it had zero output. Opened it up, notice the fuses are missing. Pop in 2 new fuses (AGC4A 250V) and try again, within 5 seconds the L channel fuse POP! I don't see any visible indications of damage or arc burns on the PCB, no popped resistors or diodes, no burnt traces or blown out caps. So I decide to just try another new fuse, POP. Swapped around my R and L speaker wires, and checked the integrity of all wires and connections. Everything looks... -
Hi everyone , I have a rx-A3010 that all alllll the channel working except of Front left , if someone can lead me on what to begin wit it would be very helpful
what I did so far ,
factory reset
test all other channel
tone test
dissasemble and look , visual inspection witout full dissasembly
looked at all the mosfet for temperature to see if they eas operating
scratch my head couple of time
thanks in advance all help is appreciated , service manual are welcome too ! =)... -
Anyone run memory speed tests with an old X58-based triple channel 1st gen or any other >2 channel board? The one I have is a Gigabyte I think.
Anyway I had four 4GB DDR3-1333 modules in the 6 memory slots and got around 11GB/sec memory speeds assuming that it went dual channel since it didn't have enough modules for triple channel. Now I stuck in two more 4GB modules, but they are DDR3-1600. I'm still getting 11GB/sec speeds according to memtest86...
Just wondering, anyone do memory speed analysis on these triple (and higher) channel memory boards? Are there any... -
Hi guys,
I need a help with my Marantz pm6005. It started to have weaker the right channel a few months ago, than it got back to normal and now it has lost sound completely on the right channel. At the final stage it was loosing the channel for a while and than it returned. After it has disappeared completely I could forced it back by unplugging the source form CD (which I normally use) to phone and back. It would then work for a few minutes and died again. Now it is possible power up and all function works normally (apart the right channel ) on all inputs, except the phone both channel...01-30-2023, 12:11 PM -
Hi friends
I have reverse engineered this tester, schematic is attached and is complete except for capacitor values. These testers annoyingly have no model number but they are the ones you find on the first page of just about any website if you type in "18650 4-channel tester". There is also a 2-channel variant and a newer 8-channel variant. They are very cheap (about £15) and can measure voltage, current, internal resistance and capacity. They have a multicolour display for all these statistics. They also have terminal blocks so that if you want to use a breakout board...
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