Electronics Repair

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I cant find this state on the map.

I cant find this state on the map. I'm referring to the State called SOLID, or SOLID STATE! (And by the way, who is thei...
10 comments posted 7yrs
posted by tubeguy
10 comments posted 7yrs posted by tubeguy

Bad probe-what's wrong?

I got my new to me BK precision 4001A function generator and I thought I would see what it does. Tried looking at squar...
13 comments posted 7yrs
posted by etpm
13 comments posted 7yrs posted by etpm

Squirrel -cage motor noisy.

4-pole 3Ph squirrel -cage motor noisy. A loud buzzing noise has developed over the past 12 months. The motor is not over...
10 comments posted 7yrs
posted by pj
10 comments posted 7yrs posted by pj

This has me puzzled (resistor change)

There is a video on youtube, where a guy re-caps and repairs and tests out a late 1940's Precision Apparatus E-200 sign...
23 comments posted 7yrs
posted by tubeguy
23 comments posted 7yrs posted by tubeguy

Dyson cyclone puzzle

Dyson DC50, a lightweight ok but nothing spectacular machine except the air passages are too narrow. Suction of dirt fr...
19 comments posted 7yrs
posted by tabbypurr
19 comments posted 7yrs posted by tabbypurr

Panasonic DVD Recorder model DMR-ES20 Problem

Hi, I have a Panasonic DVD recorder, model DMR-ES20, issue. When you plug it in (AC outlet), the rolling "ooooooo" (ini...
3 comments posted 7yrs
posted by jaugustine
3 comments posted 7yrs posted by jaugustine

Why were old transformers coated with tar?

I remember a lot of old transformers, particularly the power transformers on the old TV sets, were coated with tar. It...
11 comments posted 7yrs
posted by tubeguy
11 comments posted 7yrs posted by tubeguy

1936 Hoover Junior 375

I've done the 1940s ones, fairly straightforward. Roller brush bearing clea nout & oil, thorought electrical safety che...
12 comments posted 7yrs
posted by tabbypurr
12 comments posted 7yrs posted by tabbypurr

Panasonic cross reference

Hi Group, I'm working a Panasonic TC-P50S2. The tv won't power up and no le d blinking codes, I found a surface mounted...
2 comments posted 7yrs
posted by stankowalski02
2 comments posted 7yrs posted by stankowalski02

Vintage TV repair test equipment

Over the years I have acquired a lot of vintage test equipment. I still use most of it, but I have the following, which...
2 comments posted 7yrs
posted by tubeguy
2 comments posted 7yrs posted by tubeguy

Calibrated dial knob repair

I recently bought an old Eico 955 In circuit capacitor tester. It worked right away, but I am going to recap it. But th...
16 comments posted 7yrs
posted by tubeguy
16 comments posted 7yrs posted by tubeguy

Tektronik 2230 oscilloscope: nasty menu?

When I turn it on it says "power up failure, press menu key to continue". I press the 3 keys of MEMORY DISPLAY ON/OFF p...
7 comments posted 7yrs
posted by coulon
7 comments posted 7yrs posted by coulon