Hi all
No audio from Right channel
Can anyone help?
No audio from Right channel
Can anyone help?
Attached Files
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Re: Hi all No audio from Right channel Can anyone help?
Never seen one of these before but it's a Small amp manufactured by PS Audio.
I believe the model is SPR-A1
Known as the Sprout.
Apart from that i literally cannot find any other info on this thing.Comment
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Re: Hi all No audio from Right channel Can anyone help?
compare signals for each channel and see where it stops .. you will need data sheets for the ic.s first .Comment
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Re: Hi all No audio from Right channel Can anyone help?
I guess it would help if we could see the boards first place?!Comment
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Re: PS Audio SPR-A1 ,No audio from Right channel Can anyone help?
R333 (3R9) O/C
Suspect it has been taken out by IC302 which i need help to identify.
It's marked Abletec.com C1 & below that is 306PAttached FilesComment
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Re: PS Audio SPR-A1 ,No audio from Right channel Can anyone help?
Swap the good IC where the bad IC was, fix the resistor and see what happens.
Edit: plenty of abletec.com C1 on AliExpress.Last edited by CapLeaker; 12-18-2022, 04:08 PM.Comment
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Re: PS Audio SPR-A1 ,No audio from Right channel Can anyone help?
Hi,don't want to cause more damage as components around the suspected faulty chip blown.
Ordered a chip from Ali , but not sure if the 306P marking has any significance , or is some sort of batch code.Comment
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Hi guys I have a VLP1500 amplifier here - one channels works fine and the other channel distorts even at low volume settings
Protection and Clip LED are off
There is something wrong with the BIAS voltages around T16 and T18 (in particular) on the bad channel
I tested all diodes and transistors in this area in circuit with diode mode - both channels seem identical. Same in resistance mode across all the resistors here.
The output DC voltages on pin1 and pin8 of the 5532D dual op amp at the input of each amplifier module are the same, and the audio... -
Really strange one. Got this amp with digital noise coming from all channels. BAD cap on 12V rail and burned via on -12V rail causing -7V and +7V rails missing, audio noise and "SP CONFIG" message (thinking that MIC is plugged in then it is NOT, but before I replaced cap and fixed rails I have accidently left it ON with output transistors for rear channels hanging in air (NOT HEATSINK
). One channel blew. After further inspection found a LOT of caps out of range on DSP and Processor boards. Replaced every single one that did not pass my ESR test(almost all).Got receiver back together...
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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 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... -
so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
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