sci.electronics.repair Google Group

Technics KN220 keyboard

2009-01-07T19:02:49Z

Hi,
It suddenly cut off one of the speakers. I have tried to replace the
audio power amp, but to no avail. There is a slight hiss in the 'dead'
speaker.
Anyone having comments, tips on where to search, or even better a pdf
service manual for this keyboard.
Thank a lot for any help :-)
regards
geir

Amps and Heads ...

2009-01-07T18:41:09Z

A few weeks ago, I was looking for a schematic for a PA amp, and called it a
"head" on here. I got told that it wasn't a head, because it had a preamp in
it, and a head has only line level inputs.
Today, I was looking on the site where I get all my Marshall info -
[link]

Dead section of FM band on Sansui Stereo Receiver 661

2009-01-07T17:38:48Z

I just found an old discarded Sansui receiver. It works well in all
respects except a large middle section of the AM and FM band don't
receive any stations. A couple of stations on the extreme ends of each
band come in loud and clear, distortion free.
All other aspects of the receiver work fine.
Is there a way that I can fix the tuner section by re-winding coils or

erratic output from green laser pointer

2009-01-07T08:23:38Z

I have a green laser pointer, labelled "Orion Skyline". It's rated <= 5 mW
output power. I don't have a way to measure actual output, but I'll
assume that it's operating at approximately rated power when it's nice
and bright and the brightness is steady. Unfortunately, the brightness
is constant only when it has "warmed up".

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Lumacell RG12LD360

2009-01-07T03:10:48Z

Does anyone have a schematic for this Lumacell RG12LD360 emergency
light?
I'm new to this group and I would sure appreciate it.

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2009-01-07T02:55:57Z

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Repair of Sony CDPCX400 CD player

2009-01-06T23:32:15Z

Have cd player in subject note and would like to try to repair. this
is a carousel player and the unit looks to need adjustment or
replacement of the mecanism that moves cds to and from the carousel.
The belts need to be replaced also.
Need repair manual and parts. Any suggestions would be helpful.

P/S 2 Fat model cheap lasers?

2009-01-06T22:22:04Z

Hi Folks !
Does anyone have any cheap lasers for the original P/S 2 model I have
a couple of machines
here that are brown bread without a laser (I am try to get the son off
our new PS/3 and get his old
ones working)..
Umm the 400B, 400C, HD7 or 400R lasers would probably be best.
Cheers,
Greg
[link] <- Cheap repairs in a global depression

SHARP LC-15AV4U inverter repair, redux

2009-01-06T21:17:36Z

There was a post by "Joe" in this forum back in 1/2008 about repairing
Sharp LC-15AV4U inverters. Here is the link:
[link]
Apparently these TVs ship with more than one type of circuit board under

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2009-01-06T18:15:05Z

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Where to get Prima, Advent, & Digistar parts in Canada.

2009-01-06T16:08:05Z

Prima, Advent, & Digistar parts ! Anyone in eastern Canada doing
warranty repairs on Prima, Advent, & Digistar TV ... & Micro/Jungle
IC's anywhere else? They don't answer their phone...ever! Thanks,
Dani.

Service manual LeCroy LT224

2009-01-06T11:05:39Z

Hello,
somebody ha a service manual of Lecroy LT224?
Thanks

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2009-01-06T07:28:40Z

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