Electronics Forum / Repair / June 2007

i have bought new aston Av mp3 audio/av  few days back it was working
well today i try to start it not working please help

My IA drops out every once in awhile. I hear what sounds like a relay
clicking when this happens. I have the SM and it looks like it might
be the "Speaker Relay which is controlled be an IC and some components
that is called the "Speaker Protection Circuit." Has anyone had any

Delco model #16066982...anyone have the pinouts for at least the power
connections?
I'd like to test it and see if it works. The connector has three blocks of
what look to be four terminals each.

I have a 2001 Chrystler Town and Country and the radio keeps blinking
on and off.
It use to come on after about an hour of blinking, but now it just
blinks. Any one else

I have a Pioneer CLD95 Laser Disc that seems to do everything but spin
the disc (any disc). It moves the laser and I can see the red dot but
using a IR tester shows no output from the laser. The ribbon cable is
in good shape. I do not have the service manual for it. Is there any

I have JVC model AV-27920 television that goes back a few years.
A few months ago, I began having a problem at the top of the screen.
It's hard to describe, but it looks like to top part of the image is
folded over and displayed upside down.  I guess it looks like the

That is using non complementary pairs of N-channel,only, mosfets.
Can anyone direct me to a useful primer for such designs , with "bias" to
repair considerations, eg powering up suspect/half repaired such amps with
reduced power rail levels - what effects to expect or even if its ...

What is the reason that many/most telco related equipment like analog
modems, dsl modems, SIP adapters etc use A/C (iron core) power adapter
instead of D/C adapters?
I'm hunting down the mass of inefficient power adapters I have, and

How can I connect my spark plug directly up to the wire? I've tried
rapping the wire around the spark plug terminal and just touching the
wire to the terminal, I get spark but can get it to start.

Unit will not come on, Blink code is 5
Dont have a schematic, Going to look at it next week, Anyone familiar with
this one?
Charlie

For period 1970 to 2000, whatever they are, they are not very common in
Europe. Coarser thread , diam for diam, than the usual European mm and BA.
Common sizes are about 0.132 in outside diam. , pitch 32 TPI, would they be
UNC 6 ?

  I have a Curtis Mathes TV model CM27001S (mfg. 11/01) in my
shop (no S.M.).  A power surge due to a storm (customer has a
surge protector) might have caused this problem?
  The TV will turn on.  There is around 27KV (measured) for the

All
I have a Sony SL-C9 with frame advance fault: Does anyone have a service
manual or info to hand which would tell me what to adjust for this

I purchased this radio at Sharper Image some time ago. It's great for
FM and shortwave reception, but AM (aka MW) reception is kinda' weird
because of the 9 khz tuning steps which are used outside North
America. Even if you key in the correct frequency, the radio rounds up/

I have a Yamaha CA-800 in for service. I repaired a noisy channel by
replacing TR601 on the power amplifier board. I'd like to be able to adjust
the bias and dc offset but since this amp has class A capabilities, there
are four adjustments per channel. I'd rather not guess here. ...