🔴 President HR2510 Repairs Part 2 (SN3718) - No.873

This is part 2 of the repairs on a President HR2510, it had LOTS of issues, so it took 2 videos to cover the HR2510 repair. This repair can also help with the President HR2600, President Lincoln, Uniden HR2510, Uniden HR2600 radios. See Part 1 of the President HR2510 repair here:    • #267 President HR2510 Repairs Part 1 (SN:3...   0:00 - Intro. 1:06 - President HR2510 repair continuation. 1:45 - Testing TX control lines on HR2510. 5:40 - Testing the TX mixer output. 6:58 - Correcting the 22MHz crystal frequency. 10:17 - Finding an odd MPU control fault. 11:25 - Investigating HR2510 no TX fault. 19:00 - Fixing the HR2510 MPU control fault. 24:10 - 4 years later, fixing the HR2510 transmitter fault. 27:31 - Replacing the MRF477 final transistor with a substitute. 30:45 - AM transmit not working on HR2510. 32:22 - Installing a external speaker socket on the HR2510/HR2600/Lincoln. 33:31 - Tracking down the no AM transmit fault. 46:00 - HR2510 I.F. diagnostics. 50:10 - Fixing the problem with AM transmit not working. 53:24 - HR2510 balanced modulator IC105 AN612 example waveforms. 55:20 - HR2510 TX mixer IC106 TA7320P example waveforms. 56:41 - Why transistor bias needed on RF amplifier transistors, and why the MRF477 final transistor caused bias voltage problems. 59:08 - Patreon Supporters: https://defs.link/?u=fcb3a1 #ElectronicsCreators #Defpom #CBRadio #HAMRadio #AmateurRadio #HR2510 #ElectronicsRepair #RadioRepair #RadioMods ▶ Subscribe: https://defs.link/?u=ffa106 Click the Bell Icon to get notifications about my future videos! ** Affiliate links: (Bookmark and buy using them) ** ▶ Banggood: https://defs.link/?u=5d46ae ▶ Amazon Store: https://www.amazon.com/shop/thedefpom... ▶ 👕👚🎽☕ Merchandise: https://teespring.com/stores/TheDefpom Donate so I can make more videos for you: ▶ Become a Patreon!: https://defs.link/?u=fcb3a1 ▶ Become a YouTube Member:    / @thedefpom   ▶ PayPal Donations: https://defs.link/?u=b099ee ▶ My Odysee channel: https://odysee.com/@TheDefpom:fa ▶ My Bitchute channel: https://www.bitchute.com/channel/TheD... ▶ My Utreon channel: https://utreon.com/c/TheDefpom ▶ Test Equipment Repair Videos:    • Test Equipment Repair, Reviews and Projects   ▶ Electronics & Repair Videos:    • Electronics & Repairs   ▶ Review & Teardown Videos:    • Teardown & Reviews   ▶ CB & HAM Radio Videos:    • CB & HAM Radio Repair and Modifications   ▶ My website: https://www.TheDefpom.com ▶ My Twitter:   / thedefpom   ▶ My Thingiverse for 3D printed replacement test equipment parts: https://defs.link/?u=0347b1 ==================== My Electronics Tools (video and purchase links) ==================== Boonton ------ 4220. 8210: https://defs.link/?u=e1eddc Fluke ------ 45: https://defs.link/?u=eac51d HP/Agilent/Keysight ------ 3457A. 4261A: https://defs.link/?u=07ed95 5342A 18GHz: https://defs.link/?u=5f7513 8012B: https://defs.link/?u=ca5764 8648B: https://defs.link/?u=da52a3 8901B: https://defs.link/?u=535835 E3646A: https://defs.link/?u=128f4a Marconi ------ 2022D. 2955: https://defs.link/?u=6f6e5e TF2103: https://defs.link/?u=61baaa Rohde & Schwarz ------ SMY: https://defs.link/?u=93514b CMU200: https://defs.link/?u=8ccd72 Siglent ------ SDM3065X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498 SDS1104X-E. SDS2102 (hacked to 340MHz): https://defs.link/?u=1ed0fe https://defs.link/?u=12d498 Other Equipment ------ UNI-T UTi260B Thermal Imager: https://defs.link/?u=f3283d7 (use discount code: BG45411) KSGER T12 Soldering Iron: https://defs.link/?u=620ace http://defs.link/?u=5c112e Quick 861DW: https://defs.link/?u=138c0f https://defs.link/?u=a3fc81 Pro'skit SS-331 Desoldering Station:    • 🔴 ProsKit SS-331 Desoldering Station Revie...   S-993A: https://defs.link/?u=079677 https://defs.link/?u=e855a0 EEVBlog BM235: https://defs.link/?u=12d498 Heathkit IT-12 Signal Tracer. Racal Dana 1992: https://defs.link/?u=8eeeba Bird 43: https://defs.link/?u=4b18f7 Sinadder 3: https://defs.link/?u=2bf1dd PDVS2mini: https://defs.link/?u=869ba4 Feeltech FY6800: https://defs.link/?u=8b98cd http://defs.link/?u=34d101 Eakins Microscope: https://defs.link/?u=b0278b https://defs.link/?u=262327 Mustool G600: https://defs.link/?u=b8bc26 https://defs.link/?u=33f0aa Uni-T UT210E: https://defs.link/?u=391ce3 https://defs.link/?u=ea4edc DER DE-5000: https://defs.link/?u=0d9160 https://defs.link/?u=12d498 MK-328: https://defs.link/?u=0d9160 https://defs.link/?u=739ee7 MESR-100: https://defs.link/?u=0d9160 https://defs.link/?u=009419 ESR Meter: https://defs.link/?u=0d9160 HOPI: https://defs.link/?u=7fab55 PeakMeter PM6252: https://defs.link/?u=59ef66 HS1010: https://defs.link/?u=10c699