Digest for sci.electronics.repair@googlegroups.com - 7 updates in 4 topics

Cursitor Doom <curd@notformail.com>: Dec 03 12:54PM

I've had this great old classic radio for the best part of 40 years and
it's always sounded great on the FM/VHF band until recently. Now I'm
finding it increasingly difficult to tune-in properly, even with strong
stations. It just sounds a bit scratchy like it's off-frequency slightly.
The usual leeway I got with tuning a station has gone; it has to be dead-
on yet it's still not quite right. Speech can often sound totally fine,
but when there's a musical interlude the problem suddenly becomes
apparent again. Is this symptomatic of it needing a re-alignment? I can't
think what else could be causing it, but since I've never experienced
such a problem before, I'm really pretty much in the dark here. Any ideas?
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Foxs Mercantile <jdangus@att.net>: Dec 03 07:01AM -0600

On 12/3/2017 6:54 AM, Cursitor Doom wrote:
> I've had this great old classic radio for the best part of 40 years
 
Dried out aluminum electrolytic capacitors.
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
N_Cook <diverse@tcp.co.uk>: Dec 03 02:41PM

On 03/12/2017 12:54, Cursitor Doom wrote:
> apparent again. Is this symptomatic of it needing a re-alignment? I can't
> think what else could be causing it, but since I've never experienced
> such a problem before, I'm really pretty much in the dark here. Any ideas?
 
If you do start twiddling IF Tx cores , mark the angle and measure the
depth of each, making up a little nut and screw "depth gauge" and only
try 1 at a time , so you can get back to where you started from.
Another consideration, any ceramic resonator filters perhaps not 40
years back, the silver inside can migrate over the resonator edges and
make them go ohmic, losing selectivity
bruce2bowser@gmail.com: Dec 03 02:54AM -0800

> This happens to be a 5GHz 30 decibel rocket, but the procedure is exactly
> the same no matter what Ubiquiti radio Rod Speed chooses to make his access
> point that paints the neighbor's home (as per the calculations from Jeff).
 
You can program laser transmission and reception hardware across line-of-sight distances for the same communications but now, it might be more expensive than the radio or hardwire frequency connections that you are talking about. Maybe even more expensive than fiberoptics. I don't know how old ethernet hardwire technology is.
tabbypurr@gmail.com: Dec 02 01:52PM -0800

> Hi all
 
> I have a home theater subwoofer that the volume is stuck on high and I can't adjust with the knob low or high it's just stuck on high. I have checked the solder around the volume control and resoldered them all and cleaned the control with a contact/lube spray and still nothing. What is wrong with it??? What can I do to check for the problem? Any advice will be welcomed!!!
 
> Serge
 
If you didn't manage to fix it so far, adding a resistor from pot centre tap to ground should sort it. Value = apx half the resistance of the pot.
 
 
NT
vjp2.at@at.BioStrategist.dot.dot.com: Dec 02 06:58PM

Much obliged to all
 
 
- = -
Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus
blog: panix.com/~vjp2/ruminatn.htm - = - web: panix.com/~vjp2/vasos.htm
facebook.com/vasjpan2 - linkedin.com/in/vasjpan02 - biostrategist.com
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
jurb6006@gmail.com: Dec 02 11:23AM -0800

Quickest way to see if it is AT or ATX is that the AT type has a hard power switch, that is it actually turns off the AC going to the power supply. The ATX type has a soft power switch which connects to the motherboard.
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

No Response to "Digest for sci.electronics.repair@googlegroups.com - 7 updates in 4 topics"

Post a Comment