🔴 How Many Things Are Wrong The This Racal Dana 9918 UHF Frequency Counter Repair - No.1452

Racal Dana 9918 UHF Frequency Counter Repair The Racal Dana 9921 is basically the same unit, so this may be helpful for that unit too. UTi260b thermal camera: https://s.click.aliexpress.com/e/_c4q... Switch caps for the Racal Dana 9918: https://www.thingiverse.com/thing:726... 0:00 - Intro. 1:25 - Checking for the correct fuse. 2:04 - First look inside the Racal Dana 9918 3:10 - Visual inspection. 5:45 - First power up test. 8:10 - A hint at the fault, if I paid enough attention... 8:40 - Removing and testing capacitors. 17:03 - Why I put the capacitors back in.. for once. 17:40 - Testing power supplies for issues. 20:28 - Looking for hot spots with a UTi260b thermal camera: https://s.click.aliexpress.com/e/_c4q... 23:40 - Oops... 24:00 - Testing the voltage regulator voltages of the Racal Dana 9918 25:47 - NOW I see the fault. 26:05 - Tracking down the count fault. 30:50 - Retesting to see if fault is still present. 31:37 - Using zreeze spray and hot air to track down the 9918 count fault. 33:35 - FOUND IT!. 36:20 - Replacing the faulty component in the 9918 counter. 37:00 - Retesting for the count fault. 37:33 - Fixing the bent casing. 38:00 - Testing for correct Racal Dana 9918 OCXO operation. 41:06 - Testing the Racal Dana 9918 with a 10MHz Rubidium Standard. 42:00 - Another fault found, unable to adjust Racal Dana 9918 reference frequency correctly. 44:20 - Looking at the Racal Dana 9421 OCXO for removal. 45:20 - Removing the Racal Dana 9421 OCXO. 45:30 - Racal Dana 9421 OCXO Teardown and repair. 50:10 - Bench testing the 9421 OCXO 52:15 - Racal Dana 9421 OCXO repair. 56:52 - Refitting the OCXO. 58:45 - Retesting after the repair, and checking adjustment against 10MHz Rubidium Standard. 1:01:08 - Making new switch caps for the Racal Dana 9918: https://www.thingiverse.com/thing:726... Buy Me a Coffee: https://buymeacoffee.com/thedefpom I really appreciate the donations and support I get from my Patreon Supporters and YouTube Members, donations really do help me to make content for the channel and buy broken test gear, this hobby gets expensive !: https://defs.link/?u=fcb3a1 #TheDefpom #ElectronicsCreators #RacalDana #Repair #Electronics #TestEquipment #OCXO #Defpom ▶ Subscribe: https://defs.link/?u=ffa106 Click the Bell Icon to get notifications about my future videos! Affiliate links: (Bookmark and buy using them) ▶ Aliexpress: https://defs.link/?u=551ec48 ▶ Kaiweets: https://defs.link/?u=fe6d010 ▶ Amazon Store: https://www.amazon.com/shop/thedefpom... ▶ Banggood: https://defs.link/?u=5d46ae ▶ 👕👚🎽☕ 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   ▶ Mailbag / Postbag Videos:    • More Mailbag Videos   ▶ Electronics Projects Videos:    • Electronics Projects   ▶ Apple Repair Videos:    • Apple Repairs   ▶ CB & HAM Radio Videos:    • CB & HAM Radio Repair and Modifications   ▶ My website: https://www.TheDefpom.co.nz ▶ My Twitter:   / thedefpom   ▶ My Thingiverse for 3D printed replacement test equipment parts: https://defs.link/?u=0347b1 ==================== My Electronics Tools (video and purchase links) ==================== Kaiweets KTI-W01 Thermal Camera: https://defs.link/?u=9af6f63 (discount code: Defpom15) UNI-T UTi260B Thermal Camera: https://defs.link/?u=f3283d7 (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 YR1030 Battery ESR: https://defs.link/?u=c56527 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 Valhalla 2703: https://defs.link/?u=06bcfc Feeltech FY6800: https://defs.link/?u=8b98cd http://defs.link/?u=34d101 DER DE-5000: https://defs.link/?u=0d9160 https://defs.link/?u=12d498 ESR Meter: https://defs.link/?u=0d9160 HOPI: https://defs.link/?u=7fab55