Electronics Forum / Repair / July 2004

I recently came across a semi functioning Bontempi organ at a flea
market.  I bought it as it was only 5 dollars and htouht i could fix
it up. DOes anyone have the scematics for any bontempi Organs?

So I was within minutes of scrapping this cosmetically very nice Pioneer set
after having it sitting around dead for almost 2 years when I had some
further imspiration. Found the shorted part on the signal board causing one
shutdown and discovered the cause of the other. High ...

Couldn't find a better news group for repair of power tools, so...
Bosch 1632VS reciprocating saw. Bronze bushings in the recip. mechanism (up
front) are pressed into the aluminum casting. When saw gets warm, bushings
are free to slide with the shaft, which results in the wearing ...

I have an old Technics SU-V550 amp - my first amp (ahh... fond
memories  ;)
It has recently developed an occasional drop in one channel and
inspection reveals a scorched area of PCB around a few passives and

       I have got a Sony video camera about 4 years old, it is analogue and
has had very little use "i.e. holidays"  I just got it out again ready for
my holiday and it seems to be faulty. It seems to record ok, timer counts
up, tape is going round but when I go to playback there ...

Resoldered the deflection board, checked & changed several caps but
fault remains the same.  Checked for power on signals is good, SMPS is
both as standby supply and main power supply in one (based on
STRF-6628 IC).  Does have horizontal and vertical waveforms from

Got this tv (F32TF600YX1) in our shop and saw this odd behavior when
it is running the picture quality is like any other good TV except two
things customer's complaint on this problem and it is not right and
I'm stuck on this, had seen all kinds of bad CRTs except like this.

Something I should know but don't.  An very old radio capacitor is marked
.003 MFD. Is that microfarads, milifarads or what.  Everything I see today
is marked    (mu)farads.
--

How can I operate a Delco radio class II on my work bench?
Tnks

I am ready to start chasing an intermittent connection in a Gateway EV700AA
monitor.
I am up to speed on safety precautions.
The hard part now is getting the case apart. I have removed two screws  from

I've recently located a fault and repaired with a stop gap
measure. Can anyone tell me the details of the part ps801
as mentioned in the title.
I'd like to replace it with the appropriate part, rather than

Just for a quick test and not wanting to damage
any parts inside my TV `could' I put a
D1554 (NTE equiv: NTE2331)
in for a

Looking for electrolytic caps:
2200uF 100V rated at 105C - SIZE 22x50.. I just got my order from Mouser -
and the ones they sent me have bigger diameter. I checked their catalogue
more carefully - the only ones they carry are VR-rated Nichicon rated at

Quick recap:
27" MTC (MTV-2800s) television
replaced blown fuse
transformer in power supply squeals

I'm working on a colour set that
has a blue-green picture. I have
replaced the Red-drive transistor
on the CRT's socket PC board and