Electronics Forum / Repair / March 2004

Hi,
Have the new electronic electric meters stopped or reduced people from
tamperering with them to slow them down or do people still use Phase shift and

So I put a tape in my Sony VCR the otherday. It didn't play and it
didn't want to eject.  Apparently the left sid of the tape was
physiclally broken before I put it in.  I got the tape out, but now
the VCR says 71501 on the display like it is trying to give me an

I have a 3M MP8650 Projector that I need a Service Manual or schematic .  3M
will only sell to Authorized Service Rep..  Any Suggestions..
Thanks
Pete

I'm in need of some help on this one...
My circa 1960's vintage Rogers "Ravensbourne 2" transistorized (no
IC's) stereo FM tuner receives all FM stations but with "twittering
birdies" in the background.

I'm 21 years old, with only a high school education. I can't afford to
go to college and I have sleep disorders which will interfere with
whatever career path I choose. I decided that I think I might like to
try working at a computer repair store or something like that. Kind of

When the power button is pressed,  it turns on as normal with the red LED
glowing on the front panel.  Within a few seconds, the LED turns off, as
with the picture tubes.  Pressing the power button again seems to turn off
the tv, hearing the normal click of the relay.  This pattern ...

 Got this nice old set a few months ago. When it came in, the tuner was
snowy. Picture was visible when the set was first powered, but slowly faded
out to snow. I assumed the tuner was bad, and with no spare in stock, I put
the TV in storage in an unheated building. Now that I have ...

I have a Pioneer SDPA50 that needs convergence output replaced and have been
told by more than one tech that the STK392-180 is a superior replacement for
the -110 original.  I have not been able to find a datasheet nor any other
info regarding this sub.  The Sanyo site has the sheet ...

Does anyone have/know where I can find an HP LJ IIIP technical manual - It
must be the Tech. Manual as I need to know the signals to one of the
boards...
I found an on-line LJ II & LJ III manual, but the IIIP is a different beast

My 9 year old son decided the tv needed cleaning and did a fine job of
cleaning
the tv with windex. This included the buttons at the front panels on
the

I got 2 more lots I'd like to get off my hands to someone who can
appreciate these more. :)
1>A small lot of TV components all in their packaging:
-600V 1A Microminiature Diodes

Can anyone send me a 4-bit binary divider circuit in this email :
abce98@netvision.net.il
I must make this homework for my university and i
am late.

Looking for someone to repair my Sony.
I can bring the set to Ottawa or Hull/Gatineau.
What is your recommendation?
Thanks

Got a few of those and those ran hotter and they blew in PTK169
chassis after hour or so.  They was from home-brewed kits that
supplier put together for very good price (about 10 each for kit of:
transistor, three caps (two were wrong types and total correct rebuild

I am trying to debug an old proprietary computer (embroidering machine
control).
The symptom is non working FDD.
I found an interesting thread about FDD drives on sci.electronics.design