sci.electronics.repair@googlegroups.com

Today's topics:

* microprocesser - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/6e7de53b676b50ac?hl=en
* Paralleled Amplifier Wiring - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/d586ede5490acff1?hl=en
* MHC-GNZ333D - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/27441384cc650346?hl=en
* I Hack $2000 From PayPal To My Account. - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/221aa928ef71058e?hl=en
* TO92 marked F422 = BF422 ? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/fb98b9d2f1919287?hl=en
* Zenith 25CC25 horizontal sweep problem - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/f0f84fb8db596265?hl=en
* Revox B225 - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/42a4c8dd163b7ac4?hl=en

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TOPIC: microprocesser
http://groups.google.com/group/sci.electronics.repair/t/6e7de53b676b50ac?hl=en
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== 1 of 1 ==
Date: Fri, Jul 23 2010 9:24 pm
From: David Nebenzahl

On 7/23/2010 9:06 PM sms spake thus:

> mp8085- basic instruction

CMP OP,clueless
JZ plonk

--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

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TOPIC: Paralleled Amplifier Wiring
http://groups.google.com/group/sci.electronics.repair/t/d586ede5490acff1?hl=en
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== 1 of 1 ==
Date: Fri, Jul 23 2010 9:30 pm
From: "Phil Allison"

"Greg Shithead"

> You forgot to give the power.

** It in the very first line of the original post.

You pathetic imbecile.

... Phil

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TOPIC: MHC-GNZ333D
http://groups.google.com/group/sci.electronics.repair/t/27441384cc650346?hl=en
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== 1 of 1 ==
Date: Fri, Jul 23 2010 9:56 pm
From: anandthadhani_at_yahoo_dot_com@foo.com (ankumni)

How to open the speaker box to replace a speaker

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TOPIC: I Hack $2000 From PayPal To My Account.
http://groups.google.com/group/sci.electronics.repair/t/221aa928ef71058e?hl=en
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== 1 of 1 ==
Date: Fri, Jul 23 2010 11:17 pm
From: paypal money

I Hack $2000 From PayPal To My Account At http://1023setvideos.co.cc

I have hidden the PayPal Form link in an image.
in that website On Top Side Above search box , click on image
and enter your PayPal id And Your name. please don,t tell to any
One.

==============================================================================
TOPIC: TO92 marked F422 = BF422 ?
http://groups.google.com/group/sci.electronics.repair/t/fb98b9d2f1919287?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Jul 24 2010 12:07 am
From: "N_Cook"

I'm aware that in some situations TO92 transistors marked C556 mean BC556
(not 2SC556), can the same be for BF...?
I have a board with dozens of BF422, HV transistors on. These agree with the
schematic but someone has previously replaced 2 with a pair marked F422 and
one of them has failed B-C-E short. Diode testing (Vb-c < Vb-e) the
remaining one shows correct pinout for BF422

==============================================================================
TOPIC: Zenith 25CC25 horizontal sweep problem
http://groups.google.com/group/sci.electronics.repair/t/f0f84fb8db596265?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Jul 24 2010 12:52 am
From: Mike WB2MEP

On Jul 23, 12:59 pm, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:
> > Another Zenith had one in the HV regulator circuit that went open and
> > lost regulation. The HV was running around 30 kV on a 19" set.  A
> > regular resistor did't work on that set and I had to get the correct
> > part.
>
> > It looks likewww.moyerelectronics.comhas a 63-5440 sub. in stock.
>
> > Mike WB2MEP
>
> Good grief ! Did you not have x-ray protection circuits on the sets your
> side of the pond ?
>
> Arfa

Not on tube sets, and early solid-state ones. X-ray protection came
into widespread use when they started running the horiz. sweep from a
regulated B+ supply and did away with regulation of the HV itself.

Mike

==============================================================================
TOPIC: Revox B225
http://groups.google.com/group/sci.electronics.repair/t/42a4c8dd163b7ac4?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Jul 24 2010 1:11 am
From: Richard Smith

I have a Revox B225 which plays excellently for about four minutes,
then the sound stops and the CD spins up very fast and then stops.

The track display switches all the dots on, and although I can unload
the disc, nothing else will happen until I switch off for an hour or
so. I have replaced all the power supply caps and looked at the motor
speed control op-amp. I'm pretty sure it's a temperature-related fault,
but before I go wild with the freezer spray are there any common faults
with these decks that I shouyld be looking at?

TIA
Richard

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