Electronics Repair

rockola amp 52280-a hums

I bought a used amp for my 488 rockola. the old amp worked but one channel fuzzy and lower volume than the other side....

1 comments posted 10yrs

posted by daves

1 comments posted 10yrs posted by daves

Hand-Held Megaphones: Rubber ring around edge of Horn

Hand-Held Megaphones: Rubber ring around edge of Horn Besides performing the obvious functions - protecting the horn fr...

7 comments posted 10yrs

posted by thekmanrocks

7 comments posted 10yrs posted by thekmanrocks

Are all low-end 900 Mhz speakers interchangeable?

Are all old-style low-end 900 Mhz speakers interchangeable? The wireless speakers that sold new for $80 a pair in 1999,...

3 comments posted 10yrs

posted by NONONOmisc07

3 comments posted 10yrs posted by NONONOmisc07

Troubleshooting Bose QC2 Noise Canceling Headphones

I'm not getting any sound in the right ear piece of my headphones. I opene d it up and tested the speaker by connecting...

1 comments posted 10yrs

posted by 1001firstlast

1 comments posted 10yrs posted by 1001firstlast

Strange switches and electrons

This is just a question for curiosity. I have a Magnavox 12 or 14" CRT tv with built-in VCR. I guess that means it's ab...

3 comments posted 10yrs

posted by NONONOmisc07

3 comments posted 10yrs posted by NONONOmisc07

LCR meter recommendations?

Hi all, I'm looking to acquire a new LCR meter to replace the old bridges I've been formerly using, which can be a bit...

5 comments posted 10yrs

posted by curd

5 comments posted 10yrs posted by curd

NE-51 Neon Bulbs

Just acquired a bunch of these lamps. They're in the same mini-bayonet style as lamps like the #44/47. But would anyone...

23 comments posted 10yrs

posted by policedept

23 comments posted 10yrs posted by policedept

How to fix my 5V, 2.5amp adapter.

How to fix my 5V, 2.5amp adapter. I had 4 short power failures today, and everything on the PC started up fine after th...

28 comments posted 10yrs

posted by NONONOmisc07

28 comments posted 10yrs posted by NONONOmisc07

Slow-to-wake garage door opener

Since I don't use the garage for a car, I don't need to open it very often. But when I do, I have to push the button on...

6 comments posted 10yrs

posted by isw

6 comments posted 10yrs posted by isw

Fudge/kludging old style switch

Ona 1983 Roland Juno 6 synth, so would like to keep original looking. Easy to wire in some modern replacement. One of t...

3 comments posted 10yrs

posted by diverse

3 comments posted 10yrs posted by diverse

Fender de Luxe

Inside the amp (high voltages etc) a shard of thick aluminium foil. Does anyone fully strip off the screening foil on t...

3 comments posted 10yrs

posted by diverse

3 comments posted 10yrs posted by diverse

Marshall MG100HDFX ,2002

Loss of clean channel intermittently, dirty channel ok. Both clean switches have no contacts made in clean mode. I'll r...

0 comments posted 10yrs

posted by diverse

0 comments posted 10yrs posted by diverse

NiMH Batteries: Long-Term Storage ?

I accidentally wound up with an extra set of NiMH batteries and it's going to be quite a long time before the first set...

17 comments posted 10yrs

posted by x

17 comments posted 10yrs posted by x

Right length for table radio antenna

I have a table radio that used to have one stranded wire coming out the back, about a foot long, which I think was the...

10 comments posted 10yrs

posted by NONONOmisc07

10 comments posted 10yrs posted by NONONOmisc07

Converting Average Power to "RMS Power"

Hi all, This subject continues to severely bug me. I've just read some audio amp servicing/repair book where the author...

13 comments posted 10yrs

posted by curd

13 comments posted 10yrs posted by curd