Electronics Forum / Repair / July 2005

I have buzzing from all speakers from a Harmon Kardon 435 reciever even with
all inputs and outputs disconnected except the speakers.
I also switched off all breakers in my house electrical main panel and
dissconnected all the ground wires from the main pane as a test. Is this

Hey guys,
My hard drive was dead, i tried freezing it which didnt work, and as i
figured I had nothing to lose(Wasnt being recognised by bios at all,
definite physical problem, clicking sounds), i took it apart, how i

First of all, please forgive me my English, it is not my mother tongue...
I have a television set (Philips MD1.2E AA) of which the HOT was a short
ciruit. I replaced it and the fly-back capacitor as well. The man in the
store gave me a BU1508DX instead of a BU1506DX which was not ...

1 month ago I repaired the following:
32"Sony stereo tv model:KV-32S12,chassis:SCC-F85S-A
(Chassis:AA-1),year:Nov 1995.No power I found that T502=horizontal
driver transformer's pins had cracked solder so I resoldered it along

I am repairing Thermo Orion 525A pH-meter with a VF-Display.
It looks like there is a short in the DC-DC converter module.
The module is made by CET Technologies, model CT-1058.
I am unable to find info about it on their website and they do

Just a heads up on Electrolytic Capacitor Leakage on some 875 & 865 based
products.
http://www.intel.com/cd/channel/reseller/asmo-na/eng/tech_reference/box_desktop/
int_inst_info/dsk_factory_notes/193414.htm
Products Affected:

My trusty 18 year old GE just shot craps. It beeps and junk on the display
and I also found a reference to my problem in the EURAS database, but they
want me to pay for the info. It beeps and kinda freaks out. The boards in it
appear fine, no cold solder joints or burned ...

Hi folks...this was in a baseball newsgroup that I participate in
(rec.sport.baseball). Faraday cages have been mentioned, implying that
it could be safe. I don't know that I'd trust this against lightning
(maybe a Van de Graff generator). What do you think?

New electronics parts and supplies store.  Discrete components, shop
supplies, parts and more.
Somewhat still under construction but many items available
http://e-parts.netfirms.com/

My  Sony TV KP53V85 is not responding to the sony remote RM-Y905.  I
tried the following to troubleshoot the problem without any luck.
1. Replaced batteries in the Remote
2. Powered the TV down for 1 hour

Hi, I bought an ipod with a broken menu button. Well i thoght I'd just have
to resolder or buy a new switch.. I resoldered the switch with no luck and
then I checked it with an ohm meter and it checked good. Now here is the
Weird part, I was inspecting the board under my desk ...

I'm troubleshooting a dead "Brother BR-600XL HiFi Music Center"
(cd-tape-phono-tuner integrated unit).  If anyone has info on this
please post - the Internet yields nothing.
The unit is powered by a big (about 2"x3"x4") transformer with two

Hi people,
I've used a 240 volt Trotter 685 treadmill at home for 1.5 years. It
was purchased reconditioned from a bankrupt fitness club. The unit
worked flawlessly until this week.

Two CRT's have leaked slightly, what's the best
way to "seal" for the leak? Regular household RTV
silicone? Pinhole in one 2nd anode at the CRT, I
have anodes, what type of high voltage sealant is

I have inherited a Sony KV-21XMTU but I dont have the remote control.
Does anyone know how I can tune it - at the moment I can get it to tune
but cannot store the setting as a channel number.
Also, how do I get to AV mode?