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Mackie CR3 Studio Monitors repair log

Problem: No sound coming out of the speakers. In the beginning the sound would come and go. Then the sound stopping became more frequent until being completely mute.

What is working: The headphone output is working fine. With it I could test that the auxiliary input (front panel) is working fine too. Left and right RCA inputs are working. Left and right left and right  6.35 mm (​14 inch) inputs are working.

From the outside the only problem seems to be the speaker.

The cause: After some research I found that this is a common issue for Mackie CR3 Studio Monitors. The root cause seems to be the amplifier chip TDA7265. This chip works fine initially but after some months or years it starts malfunctioning sending a mute signal (output 5) to the board which mutes the speakers. This mute signal should only be triggered when a headphone jack is inserted however in the malfunction the signal is sent continuously.

Solution: cut the ping 5 with small cutting pliers. This stopped the mute signal but also removed the feature of muting the speakers when headphones are plugged. As this worked for me I could replace the TDA7265 chip (around $5) but I will not do that now.

Alternatives: here are some alternative solutions that did not work for me but I read that worked for some.

  • Blowing air into the inputs to remove dust and debris.
  • Quickly removing and inserting and inserting the auxiliary jack.
  • Quickly removing and inserting and inserting the headphones jack.

Conclusion: Don’t buy these speakers. I got it in a bundle deal with some audio gear I bought about three years ago. Speakers should not fail in only three years. The design of this thing is flawed. It heats too much and components start to fail. The amplifier chip seems to be a common issue but when researching this I found switches, I also saw switches, diodes, capacitors, and resistances failing. Even after I fixed it I was hearing some cracking noise in some frequencies.

Supplementary materials:

Vypyr VIP 2 amplifier clean patch by-pass step by step

  1. Turn the Vypyr VIP 2 on.
  2. Set the inst/stomp knob to BYPASS.
  3. Set the amplifiers knob to Classic.
  4. Press the amplifiers knob to select the clean (green) mode of the classic amplifier.
  5. Press the inst/stomp knob. You are now in the edit mode and the edit mode led (red) is on.
  6. Turn the delay feedback knob to zero.
  7. Turn the delay level knob to zero.
  8. Turn the reverb level to zero.
  9. Press the inst/stomp knob again. You are now out of the edit mode and the edit mode led is off.
  10. Turn the pre-gain knob to the middle.
  11. Turn the low knob to the middle.
  12. Turn the mid knob to the middle.
  13. Turn the high knob to the middle.
  14. Turn the post-gain knob to the middle.
  15. To always have this patch when the amplifier starts, save it to the bank A preset 1 (red). On the instrument type column of buttons, press and hold the first button (A electric 1) until the red led blinks once and comes back on.

Adapted from Vypyr Tips/Tricks/FAQ at the Peavey forums.

With this patch you can use thes Vypyr VIP-2 as a regular amplifier with other gear inputting directly to it.

Super Maria Sis.

In this pixel art rendition I replaced the the characters of Super Mario Bros. for female characters becoming Super Maria Sis. in the tittle.

Mario became Maria just because it’s a single letter change and it works well. Marissa would also have worked.

Luigi became Ligia. Other candidates were Lucia and Luiza. In Italian the feminine name for Luigi is Luigina. Luigi is one of the many Italian forms for the german name Ludwig, which in French becomes Louis. So Luise would have been another candidate. In Portuguese Luís, Luis, or Luiz and their feminine version Luisa, Luíza. I choose Ligia because of the “G” sound.

It’s possible to create a patch over the original NES game when you Read Full Article, to make this art become a real game. There is a lot of examples on how to do that on this article from Female-Characters NES ROM hacks.