Electronics Forum / Repair / June 2007

hi i have a yamaha stereo reciever i moved it to a differnt location
and hooked everything up and it will only turn on for about 5 seconds
then turn back off i unhooked everything and it still does it

Has anyone got one of these or a site I can download the schematic from.
I am trying to convert it to AV in.
Andrew

I have a schematic showing connections from a transformer to a circuit
board.  Each connection reads: "12.6VAC" followed by the connection id
(in this case "TP7" and TP8").  My question is: would the transformer
in this situation be called a 12.6VAC transformer, or would these

OK, it's microcomputer controlled, so does that qualify as electronics
repair even if the micro isn't the problem? :)
This unit is about 19 years old and now has started leaking mostly
or totally when it's draining.  The drain hose is in good condition

All right. I will preface this by giving a little background, as I was
called on the carpet for not doing before.
I would like to make a device called an onomatograph. What you do is
disassemble an old television and remove the horizontal deflection coil. Put

I am looking for a small quantiy (3) of the obsolete UDN2993LB or the
UDN2998 which I am told is a direct substitue. This also obsolete.
If impossible, then I will look into wiring a similar one to the
circuit even if it has a different pinout.

Inverter has been confirmed bad. I don't have any output from it.
What usualy go bad with them ? Transfo , caps ?
Is it a kind of switching power supply ?
Tks for you help

i have an older whirlpool washer that has suddenly decided to agaitat
and drain at the same time.  any help would be appreciated in fixin
this
--

I have an old old unit I am trying to fix. I need info on one of the
parts...
looks like a BIG DIL IC, I believe it is what is called "NORBIT"
The number on it is 4NOR60. Just need the pinout and fuctionality.

I am getting a message and a blue screen telling me that the channel
is not available however, when I unplug the tv and replug it in the
channels are all there including the HD local channels out of NY and
Philly. I know that it is bad for the bulb life doing this. I just

Brand: Philips
Type: 28PT5408/01
Chassis: L04E
Symptoms: Set does power up normally picture seems to be normal but

I love their selection but when you look at their minimum purchase $5
fee, you end up paying $12 extra for a small order when you consider
shipping.
Mouser is good but they have a lot of stuff, particularly capacitors

My TV start up with picture ok for one minute and shutting down
himself with power LED flashing.  I'm working without a service
manual.
All I checked seems to be OK. That TV is out of guarantee with few

Have searched but cannot find an owners manual online for Akai integrated
amp am u04.  Does anyone know if there is one?
Patt

Hello,I was wondering if you have a wiring diagram for a ford riding mower
model YT 16 early 80's. I'm blowing fuses and I can not get the PTO tp
engage. I know that the wireing is wrong and I don't know where it goes.
Please help. I need to cut my grass.