Ts 930Modifications for the Kenwood TS 9. Modifications for the Kenwood TS 9. TS 9. 40. S LCD Clock Display Erratic Operation. We have received a few reports concerning erratic operation of teh LCD. MjYyWDUwMA==/z/6UMAAOSw-W5UyKGH/$_3.JPG?set_id=2' alt='Kenwood Ts 940' title='Kenwood Ts 940' />Main dial is rotated, or the VBT or SLOPE TUNE. This appears as if you had pressed the SET, SCROLL. GRAPH switches. This erratic operation may be caused by improper timing of the input pulses. IC1. This symptom is easily corrected by replacing IC2 MBM2. T1 with. MBM2. 76. T2, on Digital Unit A. Early models of the improved IC will. Kenwood 940s For Sale' title='Kenwood 940s For Sale' />After the IC has been changed reset the main microprocessor by. AB key, and then turning the power switch OFF and. ON. Then release the AB key. After this change is made the sub display will not immediately track. A slight delay has been introduced int he new IC to. It may take approximately 0. LCD to track the main display. Please return the old IC2 to the Service Department along with the WSR. Perform this modification only if the symptom occurs, as a repair. This. change is not required otherwise. Time required for this modification is 1 hour or less. TS 9. 40. S SSB Talk Power Improvement. TS 9. 40. Ss in the serial number range of 6. XXXX through 7. 08. XXXX may be. limited n SSB peak power as compared to full CW output. The level may be. C1. 82 and C1. 83 in the ALC. Control board. The recommended replacement value for each. F, 5. 0v CK4. 5B1. H2. 22. K. Procedure. Disconnect the power cord and antenna from the transceiver. Remove the top and bottom covers 1. Locate the Control board on the bottom of the transceiver. Locate transistor Q3. The two capacitors are mounted on the foil side of the board underneath. To access the bottom of the board remove the 8 screws that mount the. See figure 1. Carefully lift the boardheat sink fomr the right hand side and pivot. Replace C1. 82 and C1. Lower the board back into its original position dont pinch any. Put the covers back on the TS 9. KENWOOD TS940 PAGE Version 2. Kenwood TS940S. friendss TS940 which had a serial number 100 lower than my own and found that the fix. EB5AGVs Kenwood TS930S page. Kenwood TS930SAT. It was a 504xxxxxx serial number so made in April 1984. At least it was not a first series model. Kenwood TS940s, CW filter, 20 MILLION SERIAL NUMBER eBayEnd date Jul 14, 2011Location Spring, TXShipping Freehttp hIDSERP,5233. Modifications for the Kenwood TS940 QSL. TS940Ss in the serial number range of 601XXXX through 708XXXX may be limited n SSB peak power as compared to full CW output. The level may be increased by changing. Kenwood TS 940S Radio Transceiver admin kenwood. SERIAL NUMBER 6,000,000 RANGE. BUILT IN ANTENNA TUNER. BUILT IN POWER SUPPLY. FULL AND SEMIBREAKIN CW. TS2000s Including the X model in the serial number range 810xxxx A98xxxx dates January 2007. Kenwood serial numbers issued from 1999 come in 2 formats. NEW Links to TS 940 page. Book mark the new links because this location will close early in 2015 httpwww. ZL4AI. S and secure them with the 1. Connect the antenna and power cord then test the transceiver for. This is an optional change and may not be performed under warranty. Time required for this change is 1 hour or less. TS 9. 40. S erratic display. Intermittent control or display problems that are difficult. ROM socket. The socket should be checked to insure. ROM. If it is found to be intermittent, remove the socket. ROM directly to the board. It should be. noted that units between serial numbers 7. XXXX to 8. 11. XXXX. XXXX to 9. 09. XXXX are not likely to have this. In addition, units with a serial number of 9. XXXX. and above do not incorporate a socket. CAUTIONRemoving the socket requires good soldering skills. The ROM. is mounted on the Digital A unit and is designated as IC2. The board, being double sided, has solder connections on. When the socket is removed. Having to pry up on the socket means that it. When performing any work on the Digital A board, CMOS. Such techniques. include using a grounded or isolated soldering tip, avoid. IC chips with your fingers, and ground. To remove the socket. Disconnect the power cord and antenna coax. Remove the top and bottom covers from the transceiver. Remove the 2 flat head screws from each side of the. Loosen the round head screw on each side of the front. Carefully rotate the front panel forward. Half Life 2 Deathmatch Patch 2011 there. It will be. necessary to unplug the VS 1 cable from the transceiver. Remove the 4 screws from the speaker mount. Carefully pull up on the mount and rotate it toward the. Rc4 Brute Force Cracker more. Swing the mount toward the right side of. Digital B. Remove the 8 screws from the Digital A unit shield. Lift the plate and rotate it to the left side of the. While avoiding contact with the pins, remove the ROM. IC2 and set it aside on anti static foam. Remove the 6 screws that mount the Digital A board. Rotate the board toward the front panel to expose the. Carefully desolder the socket and remove it from the. Do not pry up on the socket. If it does not. easily pull off the board, the top foils are still. Install the ROM in the board and solder it in place. Assemble the transceiver by reversing steps 1 1. Do. not pinch the power switch cables between the front. Time required for this modification is 1. RX AUDIO. On Kenwood TS 9. Voice Synthesizer. VS 1 installed, you may notice a hum in the RX audio. The. already present molex connectored cable for this module should be. However, on some units they have been left hanging free. PLL and digital A units and are quite good. The Fix, is simply to secure this cable to the top of the shield. VS 1 would mount. Plastic tie straps, or even. Amtor switching time. Most stock TS 9. S require 3. S to switch back from TX to. RX. This can be reduced to less than 2. S by cutting the center. Transistor Q6. 8 on the Control Unit PCB. After the modification, a slight click will be heard in the speaker. However, this is no big deal to the AMTOR nut. ALC time constant. This Mod will change the TS 9. This means that the ALC will no longer. ALC will. now follow your own sylabbic rate and emphasis. Usually the average. Use caution in this. Ham friend check around your TX frequency for. QRV. The TS 9. 40 has a 1. F cap C3. 1 and 1. K resistor R1. 04 which make. ALC. This tends to reduce the output. ALC time constant or till the circuit. Then it starts all over again on the next word. How To Install Cgi Proxy Script more. This procedure allows modification to the control PCB X5. TS 9. 40 WITHOUT having to remove the board. Remove the bottom. PCB. Locate R1. 37 and R1. These are. located in the upper right hand corner as the rig faces you upside. VR 3. A service manual is helpfull for locating parts Using an Exacto knife, VERY CARFULLY scrape off some insulation. Now tack solder a 18 watt. The time constant is now changed. Reassemble and. enjoy a superb rig. TS 9. 40 Mod for MARS and all band operations. Locate IC number 1. Now find diode 1. If you want just MARS coverage, locate IC 1. Go Back To The Kenwood Mods Page. Go Back To The Main Modifications Page. Go Back To The CB HAM Radio Main Page. Go Back To The Main Home Page. Copyright The Defpom 1.