Electronics Forum / Repair / March 2004

I have a Behringer UB2442FX Eurorack mixer.  Before the flames start,
I liked it, when it was working.  It did exactly what I needed.
It died, out of warranty, and the switching power supply looks to be
toasty.  Behringer US doesn't have PS modules yet, so it looks like

I probably wont get an answere to this one either,
but.
I am repairing a sharp XG-E850U movie/computer LCD projector.
The ballast crapped out.

All that I see is some repair guides, but I'll need the schematics too.
Thanks,
Jan/Finland

When you watching like a hockey game, you lost all details in area
where the white is present(like wathing a light) but all the rest of
the picture look normal, not to bright.
The ABL look fine, the contrast ajustement and bright do not corect

First, is the voltage on pin 19  U13101    supposed to be 5.2 or does it
come up when the set turns on? I have the voltages on cr 109 108 and 107, I
have the 16 volts onQ105 but Q104 won't turn it on to get the voltage at
U104.

I own an RCA 27" console TV, Model #: G27220TN, Chasis: CTC169CA that was
Manf. on 8/1991.  I am having problems when I turn it on, the green light on
the front comes on for about a second, and before the picture comes up, it
shuts itself back off.  Then it goes into a cycle of ...

I was in need of a new receiver and I saw a Pioneer receiver,tape deck
and speakers at the salvation army for $50.00 the other day. I thought
the price was a bit steep considering everything there is sold as is but
I took I chance on it.

I am searching for (a copy of) the Service and User manual of the
Kenwood oscilloscope CS-6000 series. Anybody who can help me out for a
fair price?
Thanks,

So I got to thinking the other day, perhaps it'd be a good idea for those of
us who have readers to archive the data off of EEPROMs in sets we service,
seems like it'd be useful to create a database of them for all the common
chassis's, particularly the ones prone to corruption from ...

AC mains motor rated 550W 220Vac 50Hz. Will it survive on 240Vac 50Hz?

   Usually hire 3 dvd,s ( cheaper this way ) and record two to whatch later
on. So does anyone know of a player thay can do this?
                      Thanks for your help.

It's very old. Perhaps 20 years and is single beam.
Anyway, sometimes when I turn the timebase, the trace becomes bright, thick
and fuzzy, with a width of say 4mm. When the time base is below 100ms/div,
it alternates between thickness and thiness. The input signal can still be

I've got an old sperry DSA-400 Digisnap meter and am looking for an
operators manual.
I've tried the awsperry site with no luck.
Anyone got a copy or know where I might download one?

Topic: Proline combi TVC140
Above set had a fall.VHS section playing tapes OK.TV section dead,no raster
and unable to change channels manually or with a remote.Please help,urgent.
Thanks

Looking for owner's manual/sevice manual/schematic for a 13" Panasonic
Quasar TP3948WW. I bought the TV in 1983 and this is the first time to
have trouble. Thanks. Catherine