Electronics Forum / Repair / April 2006

I have a Rowe MM1 Jukebox I'r repairing and while I get ample midrange
volume the bass seem very weak
I'm hoping that somebody can help me with a schematic or advise me on how
the single woofer is connected to the stereo amp in this style amplifier (

I have a Gigaset 2415 as well as one Siemens 242 unit. They are both
2.4 Ghz.
I tried to make 242 work with 2415 as an add on unit, but it can't find
the channel.

I am seeking advice on a replacement for a No 20 dry battery required for a
test meter of obscure origin, I imagine it to be rated at 15 or 18
volts.Thanks in advance .

Can i take two wallwart power supplies (the AC to DC variety) and just
tie them together in series and parallel to make a cheap diy variable
powersupply.
I am thinking of getting a cheap variable DC 12V ($20 at Fry's), and

A friend of mine has a Punch 200DSM car audio amp that is blown. He had
it mounted in his trunk and discovered his trunk had a leak when the amp
blew. I've found 5 of the transistors that were toast and replaced them.
I've also found a surface mount trasistor that is blown up but I ...

I was switching from a roof antenna to rabbit ears on my old Magnavox
tv. When I unplugged the roof antenna,  I lost the audio and can't get
it back. I've tried every combination I can think of, including
unplugging everything but the antennas. Nothing.  What could have

I come across many printers with internal heads or semi
removable/interchangable heads (such as canon) which are
not printing anymore due to extreme clogging (often from
not being used in a long time.

  I have just get a Sony Multiscan 17SF2 but it does not work.
When I plug the cord in, I can hear three small beeps and that is all.
Nothing happens, no picture, no LED... And I was wondering if this kind
of issue was well-known.

My treadmill has some problems with the driver board,
probably motor controllers, I need to test it and find
what part needs to be replaced. Can anyone help ?
Treadmill is a sportsart, on the driver board it's printed:

  Where can I get a schematic/service info. on above.  Also need
service info. on other FM/AM rec'rs.
  Since TV repairs have dropped off so much, have had requests to
repair above.Need a source for schematics.

My refurbished Laserjet 6P was working pretty well until it started to
get a continuous paper jam. Or rather, that's what it thinks. The
printer starts to do a print job then stops with the jam light on, but
there is no real paper jam. The sheet starts to go through the printer,

I would like to swap print heads between two Okidata Microline 320 dot
matrix printers.  Can anyone walk me through it or send me a link to a
website with instructions?
Thanks,

First off, I'm new to this group, thanks for taking the time to read this.
Now, this 35" RCA is driving me nuts and I'm questionning my ability here.
The problem this set has is as follows. With any input, (rf, composite), the
video is distorted, I mean, the image has what look ...

hi there,am tinkering with an old tv and would like to learn more about
antennas,& try with different shapes. what i would like to understand
before starting is if an antenna is basically a closed loop of wire
shorting the inner pole and outer poles on the RF out on the back of

Hi, my amp displays "poweringoff" within 5 seconds of being turned on.
I'm fairly certain this is the protection mode, but I don't know how to
reset it. I know that some models have a combination of two buttons you
hold while powering it on, but I can't find any info on this model ...