Electronics Forum / Repair / September 2006

I have an older Trinitron computer monitor which has recently started
displaying one-pixel wide slanted pairs of blue and red lines.  The
paired lines slant up, left to right, with the left end of one set
level with the right end of the next lower pair.  The pairs are spaced

RX-V975A no display, relay clicks, & shuts down. Very hard unit to work
on. You have to
scrap these units, just to solder a few bad connections. Can't find
anything online.

I have on the bench a Sony HCD-RX33 that is a 1998 production mini
bookshelf system with the 3 tray carousel at the top. After replacing
one of the clamper gears I can't seem to get it to do anything other
than spin the carousel. No matter what position I choose for the thing

This set has some (1/2 inch) retrace lines at the top of the CRT. From
the center down there is no vertical deflection. I've changed some
capacitors in the vertical along with the vertical output IC (LA7845)
and have the same problem. All low value resistors in Vertical look

Aiwa 3 disc CD mini stereo model:NSX-V30,year:June 1995,UL
Listed:935D,after about 1 minute tray ejects,no disc tray
rotation,belts are fine.Anyone have any common repair tips?.Thanks in
advance.

I need to know what kind of diode is an smd, mini-melf case, glass
diode with black white and green
color rings on it. I've tried to find a color code on the web but seems
like these diodes aren't so common.

Anyone know how to dismantle this?
I've removed the 12 screws on the base but there's still something holding
it together.
The power supply appears to have failed, getting a U02 error from the

Does anybody have schematic of PSU/CRT section of Main Board. I
downloaded full service manual from BAMA site only to find this
schematic missing. Should be labelled No 9.
I have problem with scope recently purchased, low psu voltages

Does anyone know which convergence IC's are used in this model? And
should I upgrade to larger ones? Thanks, Lenny Stein, Barlen
Electronics.

Gets warm and sometimes flimmers; little lines appear on the screen but does
not look like a screen problem.
Capacitors?
Bart Bervoets

I have an old Morse brand FM stereo / phonograph unit (model 74452 for
the extra-curious). The volume crackles horribly when I turn it up and
down. I have the pot half-disassembled and half-disconnected.
I am thinking that I can either clean it, or replace it. This is a 30+

I bought the unit 3 (I think it was 3) years ago only for the sake o
watching videos when I ride my exercise bike.  So the usage level i
very low compared to most tvs, probably less than an hour a day o
average.  So I was very surprised when it failed to power up one da

I have a 1999 vintage RPTV (60"),9P6031C, model that needs coolant in
all tubes replaced.  I'm experienced in all aspects of TV repair except
for coolant replacement, which I have never done.  The coolant housing
has a plug in one side, some sort of diaphragm on the opposite side,

I am trying to repair a 19" Samsung 191T monitor that appears to have
been damaged due to a storm-related power surge over the weekend.
The problem with the monitor is clearly related to the backlight: the
four backlight lamps appear "burnt" and if I shine a bright light into

Secret Squirrel wrote: