Second so called Vox AC30 in as many months with the main problem being the
simplest of components on the pre-amp board.
The wire bridging links , solder points therof, for the DC and ground lines
to the ECC83s.
The power amp board is more robust wiring and hand soldering, rather than
wire links and no problems there.
The failed one , with a pair of long nose pliers grabbing the end of the
wire and only marginal extraction force, the wire comes through the "solder
joint".
On most of these wire joints there are no "volcanoes" unlike the other
components - is it the wrong size wire/holes, so this lead free stuff moves
capillary fashion preferentially along the pcb holes and leaves little at
the pad , so only marginally covered?
2005 made, bought 2006, and just out of 1 year warranty.
So reworking all such wire joints and also small caps which seem to have
similar lack of solder depth.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

N Cook wrote:

Second so called Vox AC30 in as many months with the main problem being the
simplest of components on the pre-amp board.
The wire bridging links , solder points therof, for the DC and ground lines
to the ECC83s.
The power amp board is more robust wiring and hand soldering, rather than
wire links and no problems there.
The failed one , with a pair of long nose pliers grabbing the end of the
wire and only marginal extraction force, the wire comes through the "solder
joint".
On most of these wire joints there are no "volcanoes" unlike the other
components - is it the wrong size wire/holes, so this lead free stuff moves
capillary fashion preferentially along the pcb holes and leaves little at
the pad , so only marginally covered?
2005 made, bought 2006, and just out of 1 year warranty.
So reworking all such wire joints and also small caps which seem to have
similar lack of solder depth.

What are the wire and hole diameters ?

Graham

Eeyore wrote in message
...


N Cook wrote:

Second so called Vox AC30 in as many months with the main problem being
the
simplest of components on the pre-amp board.
The wire bridging links , solder points therof, for the DC and ground
lines
to the ECC83s.
The power amp board is more robust wiring and hand soldering, rather
than
wire links and no problems there.
The failed one , with a pair of long nose pliers grabbing the end of the
wire and only marginal extraction force, the wire comes through the
"solder
joint".
On most of these wire joints there are no "volcanoes" unlike the other
components - is it the wrong size wire/holes, so this lead free stuff
moves
capillary fashion preferentially along the pcb holes and leaves little
at
the pad , so only marginally covered?
2005 made, bought 2006, and just out of 1 year warranty.
So reworking all such wire joints and also small caps which seem to have
similar lack of solder depth.

What are the wire and hole diameters ?

Graham


Its all re-assembled now , wire size only is measurable, 20 mil diam.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

N Cook wrote:

Eeyore wrote in message

What are the wire and hole diameters ?


Its all re-assembled now , wire size only is measurable, 20 mil diam.

What I was trying to acertain was whether the wire was a loose fit in the hole.
Solder doesn't like that.

Graham

Eeyore wrote in message
...


N Cook wrote:

Eeyore wrote in message

What are the wire and hole diameters ?


Its all re-assembled now , wire size only is measurable, 20 mil diam.

What I was trying to acertain was whether the wire was a loose fit in the
hole.
Solder doesn't like that.

Graham


the 1/3 W resistors have the same diameter leads and they have normal
volcanoes and presumably through the same size drillings

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

N Cook wrote:

Eeyore wrote
N Cook wrote:
Eeyore wrote in message

What are the wire and hole diameters ?


Its all re-assembled now , wire size only is measurable, 20 mil diam.

What I was trying to acertain was whether the wire was a loose fit in the
hole.
Solder doesn't like that.


the 1/3 W resistors have the same diameter leads and they have normal
volcanoes and presumably through the same size drillings

On principle I never presume anything like that. I use hole sizes from 0.7mm to
1.3mm in 0.1mm increments on my designs for a variety of seemingly routine
leaded parts.

Graham

N Cook wrote:

Eeyore wrote in message
...


N Cook wrote:

Eeyore wrote in message

What are the wire and hole diameters ?


Its all re-assembled now , wire size only is measurable, 20 mil diam.

What I was trying to acertain was whether the wire was a loose fit in the
hole.
Solder doesn't like that.

Graham


the 1/3 W resistors have the same diameter leads and they have normal
volcanoes and presumably through the same size drillings


1/3 W?


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Eeyore wrote in message
...


N Cook wrote:

Eeyore wrote
N Cook wrote:
Eeyore wrote in message

What are the wire and hole diameters ?


Its all re-assembled now , wire size only is measurable, 20 mil
diam.

What I was trying to acertain was whether the wire was a loose fit in
the
hole.
Solder doesn't like that.


the 1/3 W resistors have the same diameter leads and they have normal
volcanoes and presumably through the same size drillings

On principle I never presume anything like that. I use hole sizes from
0.7mm to
1.3mm in 0.1mm increments on my designs for a variety of seemingly routine
leaded parts.

Graham


A possible common feature.
Certainly with the recent one and IIRC the previous one, the errant joints
were where there had been beefing up over the traces to increase current
capacity. That process having been done after the full component solder
process as any cones were destroyed.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/