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Dean Slotness

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Everything posted by Dean Slotness

  1. Did the failure occur when using the 9 volt battery eliminator or the ISO9VOLT? If using the original battery eliminator, the ground connection for the IFBR1A audio output would be at a positive DC voltage when compared to the negative connection for the DC power. If the audio input ground and the DC supply ground for the camera were common, this could cause the output IC failure noted in our repair department.
  2. See details here on fixing the loose XLR/door on the UCR401 and other products: The battery door on my UCR receiver is loose. How can I tighten it without taking the receiver apart? (lectrosonics.com)
  3. On the SRB receiver, we found and corrected a fault in the 1st conversion oscillator for channel 1. On both transmitters and the receiver we installed many circuit updates (hardware) that had come out since the products were originally manufactured. On all units we updated the firmware and of course, did a full alignment on all devices sent in for repair. We added laser engraving to the SRB housing to indicate that it had been "upgraded to SRB".
  4. Wiring is the most likely suspect in this case. Verify that the Sanken COS-11 is wired as shown in figure 5 of the following: https://www.lectrosonics.com/Support/Microphone-Wiring/uhf-transmitter-5-pin-input-jack-wiring.html
  5. I can think of a few different faults that could cause this symptom. If the DSP clock crystal was slow to start or just at the threshold of acceptable output you might see this issue. If the DSP power supply was sagging on start up you might see this issue. We have also had a few similar errors that were caused a bad CODEC or any other (bad) part hanging off the shared SDO line. Not sure that helps, but there you go... Dean
  6. Changing the firmware in the SMWB will not change the RF power output. If an EU transmitter was changed to US type firmware, the menu would show 100mW power but the actual output would still be 50mW. It is not possible to change the power output on the SMWB or any other wide-band Lectrosonics transmitter.
  7. The blinking switch setting indicator is a Phase-Locked Loop error. There are several possible faults to cause this problem.
  8. How is the B6 microphone wired? We have noted that the figure 1 information from our mic wiring page does indeed cause the noise you have reported. https://www.lectrosonics.com/Support/Microphone-Wiring/uhf-transmitter-5-pin-input-jack-wiring.html Suggest using the wiring from Countryman's site as shown in the pic below... Please let us know if this wiring cures the high pitched noise.
  9. Also recommended to clean the battery door and the mating surface on the housing. See details on the attached .pdf document. Only a small amount of polish is required, do not use excessive force when polishing as the finish can be removed... SM battery door cleaning.pdf
  10. Correct, Venue 2 has no issues. Correct, only transmitters impacted. The SMWBs are 75kHz in the US, this will be changing to 50kHz in the future after re-submission for compliance. This will not be required to be changed on the existing units, but firmware will be available to limit the deviation to 50kHz if desired.
  11. Our plan is to release firmware that allows for both European (50KHz) and North American (75KHz) hybrid modes for the original Venue...
  12. http://www.lectrosonics.com/Support/frequency-tables-switch-settings.html#block-33
  13. The transmitter is capable of both dweedle tone and IR... See details on page 14 of the manual: http://www.lectrosonics.com/US/phocadownload/LTman.pdf
  14. We have heard this occasionally when signals from the display (or button presses) find there way into the oscillator and "modulate" the first conversion oscillator. If your display cable is routed near the oscillator cover (1st photograph) try routing as shown in the second photograph shown here. Follow the tutorial shown on our website (up to step 7) to get access to the display cable: http://www.lectrosonics.com/US/Service-Bulletins/sb1005-lcd-display-module-pn-48353-replacement-instructions-for-ucr-series.html
  15. 2 authorized warranty repair centers in the UK: United Kingdom Service & Support Raycom Ltd Langton House 19 Village St Harvington WR11 8NQ United Kingdom Main Tel: +44 (0) 1789 777 040 Email And Audio Related Technology Ltd. 5 Phoenix Business Centre Higham Road Chesham, Buckinghamshire HP5 2AJ United Kingdom Phone +44 (0) 494 794 286 Fax +44 (0) 494 794 269 www.audiorelated.com simon.griffet@audiorelated.com
  16. Hi Nick, Larry asked me to jump in here. The front end bandwidth varies slightly with the frequency in use; however 15 MHz would be an accurate number. In regards to frequency selection: One channel doesn't have to be higher. It is just that there are certain relationships between the channels which are problematic. The firmware will alert if you happen to hit on one. The formula for failure on an SRB (and SRC) is 4.2 <= (ch2 - ch1) <= 4.8. Notice that any time ch1 is higher, this relationship becomes impossible, but there are many, many combinations with ch1 lower that work, too. On the SRB and SRC, if channel 1 is set exactly 4.5MHz lower than channel 2 then both the 1st conversion oscillators are set to the same frequency and an audible beat frequency can be heard. On the SR and SRA if channel 1 is set exactly 4.5MHz higher than channel 2 then both 1st conversion oscillators are set to the same frequency. If you set the receiver to the "bad" combination you will see the message "FREQ WARNING" on the display. Best regards, Dean Slotness
  17. See page 15 from the manual for information on tuning groups. http://www.lectrosonics.com/US/phocadownload/LRman.pdf
  18. See the differences between the SRA and SRB here: http://www.lectrosonics.com/Support/component/com_fsf/Itemid,717/catid,2/view,faq/ FAQ # 129
  19. Sounds like you are describing compandor noise. Try turning the transmitter gain up and the receiver output down, this will improve the signal to noise ratio and the compandor sound should be reduced. See details regarding signal to noise here: http://www.lectrosonics.com/Support/Wireless/tn1016-transmitter-audio-gain-vs-signal-to-noise-ratio.html
  20. UCR211, 411, 411a XLR insert tightening tutorial.pdf Glad I could be of some assistance. I added a couple more steps to the tutorial to (hopefully) help with the odd stubborn unit... Best, Dean
  21. UCR211, 411, 411a XLR insert tightening tutorial.pdf Usually when we see loose XLR connectors on the UCR211, etc. the fault is a loose hex screw. The issue could also be the XLR insert itself. See the short photo tutorial on correcting this issue. Best regards, Dean Slotness Note: Slight edit to the tutorial to show the XLR adjustment required to get the proper battery door tension. BTW, a loose XLR insert or thimble should be corrected as soon as possible to prevent the XLR from being pulled out of the receiver. If the XLR is forcibly pulled from the receiver the wiring from the circuit board to the connector is likely to break...
  22. ucr190__overview_photo.pdf To tighten the XLR insert in the UCR190 the housing will need to be removed. This will get you access to the set screw. On the UCR211, 411 etc. see FAQ #091 from our website: http://www.lectrosonics.com/Support/component/com_fsf/Itemid,714/view,faqs/?option=com_fsf&Itemid=714&view=faq&catid=-2&search=%23091 Be glad to send any information required to get you fixed up. Best regards, Dean Slotness
  23. Yes, Mode 7 is compatible with the 2020 and 2040 type transmitters.
  24. Either the receiver is no longer receiving or the transmitter is no longer transmitting. It could be something as simple as a rx or tx crystal, but that would be difficult to say without the failed unit in front of me on a test bench. Joe Burtinsky at Lectrosonics Canada still works on these units, give him a call, I'm sure he can get your 195 system back to operational. Best regards, Dean Slotness Lectrosonics, Inc.
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