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Hi Bert, the "ringing test on the transformer", is that a way of testing the windings of the primary transformer? Do you have any information about this test? Because my scope is running fine on an

I mostly adjust the temperature for specific tasks rather than for more power (I agree that is not a good workaround anyway). For example to tin enamel wire I need to crank it up so the laquer burns

This is basically what the TR502 and similar tracking generators do. They're designed to solve exactly this problem. However, just mixing with the first LO isn't enough. At frequency/div settings less

Hi list I'm using my 7L13 to measure bursts of 480 MHz signals. It works pretty well but I miss a more precise frequency readout. Is it possible to make a better frequency readout? Is it difficult to

Heathkit was known for using capacitors too close to their rated voltages. I should still have some Pet 8050 disk drives, and there should be a few 4023 printers in the garage. The first Tek scopes

Free for Fed Ex Shipping: 55 pounds of Tek 465M modules: Including Vertical, Horizontal, main board, rear heat sink, at least 2 CRT's. All modules not tested, some have had parts removed. Fed Ex

The 24x5 power supplies are quite robust.? I doubt that any permanent damage has been done.? Put the two caps (C1115 and C1132) in the right place and replace R1071 and the supply will probably work

wrote: The tips come in different temperatures and lots of different shapes and sizes. You select the tip with the size and shape that matches the work and with the temperature you want. They have so

I see they still use the RF tips where you can't adjust the temperature. That has always been a deal breaker for me (I adjust the temperature quite a lot) but I think for desoldering it would be fine.

Yes Stefan, I have mine, still use it. I'm using a Metcal PS2E-01 power unit with mine. The power units can be had on eBay pretty cheap these days, and since this older unit produces the same 13MHz

<snippage> I have the Metcal DS1, as well as two sizes of soldering pencil (standard and micro-fine) and the hot tweezers. I use them with the MX5000 power unit. Honestly, I consider it the best

I have several Metcal products, the single iron and the hot tweezers and they are great. Unfortunately, I don't have the desoldering tool myself but agree it works well. The MX-500P control station is

I wasn't familiar with the Metcal MX-DS1 and it does look rather good, thanks! Do either one of you, or maybe both, currently have that system? If so, please tell me which model, especially also of

No, we built it in about '76 (it had push button tuning!), so it was solid state except for a HV rectifier tube, which I eventually replaced with silicon.? I kept it running until about '87, when my

Same. A dab every now and then and I have no issues. I find the MX-DS1 the best desoldering tool I've ever used. It fits most of the bill from the other message regarding improved features as well.

Was that a transformerless, tube TV? the 160uF, 250 VDC electrolytics often failed this way. They were the input electrolytic capacitor on the voltage doubler. Three years of heavy use was about a

I don't do much cap-swapping, but when I do, I always check the orientation of the existing caps before removal.? The only time I've ever blown up a cap was in a college lab.? It was a small one,

I use tinning flux with zinc chloride in it for that.

Well yes I agree with Chuck only do a few at a time of the same microfarad rating then move onto the next. There is a good chance the PS is now burnt toast. This is difficult to troubleshoot unless

Raymond,I have seen this happen several times, so many times I remember the number designations without looking them up.? But I make mistakes, so I look them up anyway.? I wish there was a way to