Electronics Forum / Repair / May 2007

hi, i was called by my grandmother to repair a 21" sharp tv. The
problem was there was an intermittent sound. the tv reception and
picture was fine. I inspected the PCB and resoldered many cold solder
joints. Turn it on, but the problem was still there. So I prod the

   Recently I had trouble with my digital cable "box" (Motorola from Comcast)
and a service man came.  Unfortunately, I didn't see everything he did, but
when I came in the room,  he had a service mode menu display on the
TV.   I am familiar with service mode menus in televisions ...

Sony model #HT32744. Hit power button, relay clicks, high voltage
starts up, then relay clicks a few times and no go. Checked bridge
rectifier, shows voltage while starting up, but goes to nothing when
relays click. Had disconnected power to HV board before, and after I

In a UK national newspaper today, about 80 USD, emphasis on the XS of XS8303
http://technology.guardian.co.uk/weekly/story/0,,2091219,00.html
Is £40 the right amount to pay for a loudspeaker screw?
Charles Arthur

One month ago, I bought a house with a Bosch SHX56B06UC dishwasher.  I'm
guessing it's 5 or so years old, though I can't find a manufacturing date on
it.  Machine ran fine at 1st, now the pump will not drain the machine.  It
makes noises that sound as though the pump is running, ...

A 200W combo, UK made 2002, with one solder joint to a small on-end
electrolytic failed
so could be just due to vibration/resonance.
But it is on a board with obvious conical solder joints so perhaps the most

(Apologies for the multi-posting - I've had no replies at alt.video.vcr
so am trying here.)
About 2 years ago I bought a Philips DVP620VR DVD player & VHS recorder
combi machine. The VHS side of things has only been quite lightly used,

Where there is a different footprint for a replacement item and you have to
pierce the pcb, in slightly different positions to the original, to push
pins through.
At the moment I use a small drill bit in a dremmel and use the fluted part

I need to put a lanyard on a small remote control.  It will get lost
unless it's on a string.
Here's a picture of the kit.
http://preview.tinyurl.com/2lnex6

When switched on the television picture drains colour from the edges and
then 'implodes' in on itself in about a second. Then it turns itself off and
a couple of seconds turns itself on again.  It then continually repeats this
cycle. Picture>draining edges>implosion>turns off and ...

While dumpster diving I found a 2.1 speaker set.  Static in the left
speaker.
I swapped speakers, problem persisted.  I swapped the op amp out with a
known good one, same thing.

For permanent marking missing legends or other added comments to black cased
ICs.
Do they exist?, not necessarily Staedler or even white , just something
thats not dark red,green,black or blue, that stays on and contrasts with

I have several DMMs, including a Fluke 77.  Let's say I'm testing a
high voltage, possibly charged cap such as a motor run capacitor.  Is
it safe to use the DC voltage measurement function to see if the cap
has been safely discharged?  What about on cheaper DMMs, is this

Is anyone familiar with these drives ? I replaced one with exactly the
same drive but now the machine won't work. I have a feeling these
drives are somehow "locked" to the motherboard. Does anyone know the
exact procedure to solve any software issues associated with DVD drive

Anyone knows a company online where I can purchase a laser lens unit
for a Phillips DVP 3040?
Anyone know the manufacturer of their laser lens  unit?
Cheers