Bass Amp - MARKBASS Little Mark III
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by eduaqaI'n trying to fix a M&S SYSTEM DMC-1which have following problem:
I'm using FM station to do this fix, I works perfect if volume below around 8 or if bass is set to zero, the sound can go to 20 without problem, but if I set bass to maximum and try to go over 10 the sound comes distorted ... I saw a video on YouTube the person saying about the main capacitors on the power portion, but I disconnect the main transformer and inject direct to the capacitors PINs my bench power supply -23v 0v +23v, but still distorted so I think the problem is not the capacitor neither the transformer...-
Channel: Troubleshooting Audio Equipment
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Repair manual part number 702_58300000148618_ara_en_a
It took way too much effort to find this manual so I am sharing it here so the next person can find it easily. Also, I am mad at Bosch for not publishing it on their website, so they deserve to have it leaked....-
Channel: Schematics and Boardviews
07-14-2025, 07:36 PM -
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by sjsulHi colleagues,
I have a situation with 2 Macbooks M1, 1x A2337 and 1x A2338. I will post below the symptoms and what I have tried until now
- They both power on and display the exclamation mark 1 second after displaying the Apple Logo
- They both try to enter Recovery but after restart they loop in the step above, showing the exclamation mark
- They both enter DFU but are not recognized by the other computer. Also tried force DFU, bot have voltage on SOC_DFU_STATUS. Still not found by other computer in Apple Configurator or Finder, used more cables, TBT3 and... -
Postcard 32 4-Bit 4-Digit Diagnostic Card PC Analyzer Manual
Diagnostic Card is a powerful diagnostic tool for technicians and administrators to troubleshoot
various problems of IBM compatible PCs. It is easy to install, yet extremely powerful to use. With
Diagnostic Card in hand, you no longer have to go through tedious and time consuming process of
trying to figure out what is wrong with your PC hardware. Diagnostic Card will tell you exactly
what is wrong with your PC in just seconds. It saves you time and money.
Our new and improved design...-
Channel: Schematics and Boardviews
11-01-2024, 06:29 AM -
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by ZonziHi everyone !
Once again I have an issue with old stuff I found for cheap, guess I have a taste for these.
I bought these two Telefunken L70 speakers for 20€ (https://www.radiomuseum.org/r/telefu...r_box_l_2.html), and they are in a superb state, component-wise. The box is scratched but I couldn't care less, I'm interested by whether it works or not.
They do work, and have a really nice sound, but one of the two has a problem with its 8" woofer. It's got practically no bass, and the mids are really pushed...-
Channel: Troubleshooting Audio Equipment
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