Electronics Repair

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How do you test an ANALOG RF meter?

Cobra 29 cb. The meter never moves on receive, transmit, or ever. An external SWR meter confirms its transmitting and I...
6 comments posted 7yrs
posted by tubeguy
6 comments posted 7yrs posted by tubeguy

Re: Film capacitor as power-supply filter

>> Perhaps one economic factor is that, as the cost of other components has >> fallen, people expect the electrolytic c...
0 comments posted 7yrs
posted by g
0 comments posted 7yrs posted by g

Do all Cobra CB radios have bad readouts?

Just picked up a Cobra 29 LTD WX classic radio. I really dont find much use for CB anymore. But for a couple bucks, I l...
5 comments posted 7yrs
posted by tubeguy
5 comments posted 7yrs posted by tubeguy

Repair card edge connectors...

Has anyone here used tinned copper tape for repairing PCB card edge connections? I've used the PACE kit for many years...
1 comments posted 7yrs
posted by spam
1 comments posted 7yrs posted by spam

Looking for tips on speaker cone repair

Looking for tips on speaker cone repair. Years ago, I used rubber cement and toilet paper on the rips. Any better sugges...
7 comments posted 7yrs
posted by tubeguy
7 comments posted 7yrs posted by tubeguy

What is PORTTHRU

Everytime i use my laptop at a public WIFI, I see PORTTHRU as i refresh my list of available networks. This is everywher...
8 comments posted 7yrs
posted by tubeguy
8 comments posted 7yrs posted by tubeguy

Pot with switch

A standing issue is pots that include on/off switches, lack of availability thereof. Anyone have any suggestions on repa...
3 comments posted 7yrs
posted by tabbypurr
3 comments posted 7yrs posted by tabbypurr

USB Type C question

Nothing I found will answer this simple question >>> Does a usb type c port need something connected to negotiate for th...
5 comments posted 7yrs
posted by ken1943
5 comments posted 7yrs posted by ken1943

reduce the speed of a single phase induction motor

Hi Comrades, please what is the simplest way to reduce the speed of a single phase induction motor to about 50%? also c...
5 comments posted 7yrs
posted by fynnashba
5 comments posted 7yrs posted by fynnashba

Old 'Scope inductor and cap help please

Down with water heaters and up with old tube oscilloscopes, that's what I say. Well, I picked up a couple of old scopes...
24 comments posted 7yrs
posted by etpm
24 comments posted 7yrs posted by etpm

Water heater relay moot

Thanks everyone for your replies about the water heater relay. My brother has decided it's all too much trouble because...
0 comments posted 7yrs
posted by etpm
0 comments posted 7yrs posted by etpm

Here's the deal on that water heater

So I got clarification on the water heater situation. In the past they had an instant on water heater and it was dislik...
2 comments posted 7yrs
posted by etpm
2 comments posted 7yrs posted by etpm

Does this device exist?

My brother's wife wants a small water heater under the kitchen sink. Not an instant hot water type but one that holds a...
47 comments posted 7yrs
posted by etpm
47 comments posted 7yrs posted by etpm

Help me to identify a transformer.

Hi all out there. I found a transformer in my basement. I don't know if its a audio-output transformer or just a power...
22 comments posted 7yrs
posted by bo-lennart.karlsson
22 comments posted 7yrs posted by bo-lennart.karlsson