HIckok Military TV-7 TV-7D/U Tube Tester Calibration Service All TV-7 Models

We Are Located In North Carolina

All service performed by Degreed Electrical Engineers with over 37 years of experience designing and servicing Tube and Solid State equipment and Tube Testers. Check our credentials and then ask for theirs.

      THIS IS A SERVICE NOT A TESTER FOR SALE

 Bought a Hickok TV-7 series tube tester on Ebay? Now what? It is most likely out of calibration like 99% of them being used. Our Company Ctech Electronics will calibrate your tester according to military standards (according to the military field maintenance manual), with a custom Gm simulator and calibration tubes as a reference. The service assumes a working unit. The calibration consists of:

1. All calibration procedures follow the official military field maintenance documents for these testers.
2. Check operation of all switches and check tube sockets, clean and tighten as required. Align all controls.
3. Check main meter operation for sticking, zero set and full scale sensitivity. 
4. Test and replace Electrolytic capacitors as needed.* 
5. Check all other capacitors and replace as required. * 
6. Check  fuse lamp and pilot bulb. Replace as needed. *
7. Check neon bulb and operation of leakage/short detection circuitry. correct as needed. *
8. Check the 5Y3GT and #83 tubes. Check waveform symmetry. If symmetry is not observed, tubes must be replaced. *
9. Check and adjust all voltages (Pate, Screen, Bias and Signal) according to TV-7 military calibration procedures using a high accuracy voltmeter with proper loading. Adjust line circuit to proper mark.   
10. Properly Calibrate and recheck the all Gm ranges on function switch with Gm simulator and calibration tubes. If calibration cannot be achieved resistors may need to be replaced. *
11.  Check and Adjust Shunt Dial. *
12. Lightly clean front  panel  and case
13. Check the unit with a variety of good and bad power and small tubes
14. Your unit will operate as accurately as it possibly can.

* Parts and/or labor at extra cost

The calibration cost does not include the cost of any required parts replacement/labor or circuit modifications  required. You will be notified if this is the case.  Most times this is not required to get the TV-7D/U calibrate, if the unit is in working condition. Other TV-7 models may require adding resistors at extra cost.

Typical turn around is generally 15 - 20 working days but varies with work load. Check with us for turnaround times.  The shipping calculator is an estimate on return shipping. We will refund or bill you for the difference between this and the actual shipping charges, since we only charge actual shipping fees.

If you would like to speak to us please call at 301 351-3781 or email us at [email removed by eBay]

We prefer Paypal. If you agree to replacement parts, we will bill you for the parts and labor via PayPal.

In the event your unit can't be calibrated, or you decide you don't want to do it because of parts needed, you only pay a 59.00 bench fee and return shipping, and the balance of your payment will be refunded

We are degreed Electrical Engineers and have been in the Audio and Electronic business for 30 years. We are also avid audiophiles. Check my feedback and bid with confidence.

Please double box your tester and ship fully insured with tracking. If you have just purchased one off Ebay, have it shipped directly to us first, to save shipping charges. Your box will be used for return shipping. If your box is damaged, there will be a nominal charge fo packing and materials. Please include contact information in you package, as well as a description of what you think is wrong with your tester if other than calibration issues..

We also service B&K and other brands of Testers as well. Email us with your requirements.

[email removed by eBay]

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