VINTAGE HICKOK TV-7B/U TUBE TESTER 1581 For Sale

VINTAGE HICKOK TV-7B/U TUBE TESTER 1581

The sale is for aHickok TV-7B/UDynamic Mutual Conductance Tube Tester. All sockets have been cleaned and are tight. The exterior case has been repainted. A copy of the test data booklet will be included with the unit. All switches have been check and cleaned.The 83 and 5Y3 tubes has been checked for balance, replaced if needed. All resistors have been checked and replaced as needed. All capacitors have been replaced.

Model: TV-7B/U Seral #: 1581 Date: 10/1/2015 Owner: Inspection Notes: Repair Notes: Power cord needs replacing Power cord replaced with grounded power cord Tester Dirty Switches cleaned Lid gasket no good Replaced CR1 with 2 diodes Readings out of spec. Cleaned sockets Cleaned switches Replaced C102 Installed new lid gasket Adjusted screen and grid voltage Repainted case Electrode Voltage Tests Filament Voltage Tests - VAC Electrode Bias Dial Range Pins Min Max Actual Setting Min Max Actual Grid 100 B 5 & 6 38.0 DC 42.0 DC 39.55 0.6 0.65 0.72 0.64 Grid 75 B 5 & 6 24.8 DC 26.8 DC 25.86 1.1 1.05 1.20 1.12 Grid 50 B 5 & 6 12.4 DC 14.4 DC 14.40 1.5 1.25 1.42 1.28 Grid 22 B 5 & 6 2.8 DC 3.2 DC 3.29 2.0 1.90 2.25 1.92 Screen Lo 0 B 4 & 6 54.5 DC 57.5 DC 56.30 2.5 2.58 2.85 2.72 Screen Hi 0 B 4 & 6 127 DC 133 DC 130.6 3.0 3.15 3.60 3.19 Plate 0 B 3 & 6 147 DC 153 DC 151.3 4.3 4.25 4.75 4.46 Grid 0 B 5 & 6 4.70 AC 5.30 AC 5.19 5.0 5.15 5.95 5.41 Grid 0 C 5 & 6 4.70 AC 5.30 AC 5.19 6.3 6.20 7.20 6.36 Grid 0 D 5 & 6 0.90 AC 1.10 AC 1.04 7.5 7.32 8.20 7.30 Grid 0 E 5 & 6 0.45 AC 0.55 AC 0.52 10.0 9.60 11.00 9.91 Grid 0 F 5 & 6 0.45 AC 0.55 AC NA 12.6 12.10 13.50 12.16 20.0 19.00 22.00 22.20 25.0 25.30 28.20 27.26 Other Tests 35.0 35.20 39.50 37.50 Test Setup Min Max Actual 50.0 51.50 57.00 52.06 Shunt 12K Shunt @ 90 = Range A -2 2 0 75.0 74.00 82.00 73.80 Range C 6L6 Range B = 120, C = 60 59.5 60.5 60 117.0 112.00 128.00 115.00 Diode Pins 3 & 6; Press 2 18 AC 20 AC 19.72 Mutual Conductance Test Rectifier Pins 3 & 6; Press 7 35 AC 38 AC 35.15 Applied 50 VAC to pins 3 & 6 0Z4 Pins 3 & 6; Press 6 285 AC 300 AC 285.6 Range Min Max Actual Short Connect pins 3 & 4 Short 2 Short 3 OK B 38 42 40 Gas 1 Pins 3 & 6; Press 4 139.5 AC 170.5 AC 169.4 C 18 22 20 Gas 2 * Pins 5 & 6; Press 5 162K ohms 198K ohms 189.9K D 38 42 40 Tube Test E 38 42 40 Tube Ref. Tube Actual Tube Ref. Tube Actual F 38 42 NA 6L6 31 31 6SC7 38, 43 38, 43 3V4 80 80 12SK7 78 78 * Power Off 6C5 68 68 5Y3 58, 54 58, 54

All voltage measurements were taken with a Fluke 115DMMshunted to simulate 1,000 ohms/volt meter sensitivity.House voltage is 120 VAC. Please look at all pictures before offerding. If you would like me to test a certain tube let me know.

Terms ofSale

I will combine shipping.

I will combine shipping if I can. Sometimes heavy items can not be shipping together. If you should win or purchase more than one item that I’m selling, please wait for an invoice prior to payment.

If an item is damaged during shipment I accept returns.

You should expect to get the itemyou\'vepaid for in the same condition as it was advertised, and not in pieces. If it arrives broken then I should have packaged it more securely. I will give a complete refund including the cost of the return shipment immediately upon having been provided with a tracking number. You must use the same method of shipping as I did. I no longer give partial refunds for shipping damage as I have had several customers request partial credit claiming shipping damage who have then provided me with photos of another item, not the one I sold. You must return the item to me for refund. Do not demand a refund without returning the item. This goes against policy and I will report you.

If I send you the wrong item by mistake please let me know.

You should let me know and return the item. I will pay for return shipping as long the item shipped the same method as I shipped the item and the item is received in the same condition as I sent it. Once I receive the item back, I will give you a full refund or send you the correct item.

If you offer on an item by mistake I can cancel the offer.

If you should change your mind or were not clear on what you offer on I will cancel offer if you let me know before the end of the sale.

Should you change your mind after receiving an itemI\'veno problem with you returning it.

I want everyone who purchases from me to be a happy. However, in this one case, I do require that you pay the return costs.

I sell and I ship to domestic, US based addresses.

I will ship some items internationally using the Global Shipping Program only to eligible countries. Once the item leaves theGlobalShippingCenterin theUS,I will consider it to have been received in good order and any damage or loss due to shipping beyond that point is your responsibility. Should you manage to place a offer but the shipping address is not to an eligible country, the offer will be cancelled without notice.

I don’t end sales early.

I strive to be fair and honest in my listings and in the way I do business. My feeling is that those who may be watching or offerding on one of my sales should be given the full duration of the sale to decide what they wish to do.

Other- If you have any questions or would like more pictures, email me before the end of the sale.Lost mail is not the fault of the seller.YOU MUST CHOOSE PRIORITYMAILTO BE COVERED FOR LOSTMAIL. I WILL NOT REFUND MONEY FOR LOSTMAILUNLESS IT IS INSURED.

does not allow combined shipping for international sales using the Global Shipping Program.So I do not offer combined shipping on international sales.