USED
These AC power input components are a "pull" from yet another amplifier in my audio equipment "maybe I will fix that one day" collection. I actually had a few of these V2's, some being used to service others and now I had just one left, destined to become an "organ donor"
Technics did build great front panels on their vintage amplifiers, something that other manufacturers would have done well to take notice of ... the front panel is all 3.2mm thickness Aluminium and some of the knobs are classic Technics, machined, SOLID Aluminium and heavy! This AC power transformer is in the same category i.e well constructed, compact and easy to instal in another V2. I am actually offering here the complete AC line input sections, all wiring remaining intact.
This means that this advertisement is for the AC input voltage selector switch, AC power transformer, interconnect & dual fuse PCB and the lever ON-OFF switch but WITHOUT the push fit knob - I have the lever type knobs listed separately.
You might be wondering "why did he turn his amp into an organ donor?"
Its sad but after years of great service, the special original Technics ST8040 power blocks gave up the ghost. You may see ST8040 blocks online, BEWARE! they are not as they seem - I have had nothing but trouble with blocks unless they are marked TECHNICS NEW CLASS A ST8040, also look for the batch code on the rear. Unfortunately these genuine ST8040's are hard to 'come by'. Added to that, there was also an intermittent issue with the preamp board slide switches so I decided that it was time to put the amp out for pasture and by extracting some useful components, giving "life" to another SU-V2 amp in need of tender loving care.
I am very big on sustainability, re-using or re-purposing equipment (no matter how old it is) because a LOT of EE (Embedded Energy) was used to create these items from our past and to throw something like this away, poison our landfill etc is just so irresponsible.
So I have tested and saved the known working and useful parts - here is one of those parts ...
If this V2 part is not what you are looking for, you might like to click HERE to see the other V2 spare parts I have had or that are currently available
TECHNICS Stereo Amplifier
Model: SU-V2 (Australian release)
Complete AC input sub-assembly, including the power transformer
Primary part # SLT5P187-I (Step down transformer)
Multi AC input selection: 110, 120, 220 & 240V AC (currently left set to 240V)
Includes the front panel ON-OFF lever switch (no knob, this is advertised separately)
Dual Fuse block PCB with associated spark suppression capacitors at the rear of the ON-OFF switch
TESTING:
Absolutely no issues.
The power on-off switch operates properly, positive action.
The AC transformer provides 6 output wires on the secondary.
Blue - Blue - Black is 62V AC centre tapped and while still in the amplifier, under load, I measure 31.6V & 31.2V on each of these windings
Orange - White - Yellow is a 6.3V low voltage output (front panel lamp) and I measured exactly 6.3V across this winding.
TRANSFORMER DIMENSIONS:
Transformer body measures 80mm high x 93mm wide x 93mm deep
2x mounting L shaped flanges on the base of the transformer
4x mounting screws (supplied) 70mm apart on each side and 80mm between the two flanges at the base.
I am supplying the mounting screws for the transformer, AC selection switch and the power ON-OFF lever switch and there is even a small packet of 2 screws for the interconnect PCB mounting.
COSMETIC CONDITION:
USED
Undamaged
Very good condition, clean
Nicely built AC stepdown transformer, type SLT5P187-I with tight laminations (no buzzing under load) with a good solid copper flux band around the core.
REMEMBER: All wires are intended for wire-wrap construction, solid core. You can of course still solder these but wire-wrap was a popular choice of wiring at the time because it actually provides a better contact than when soldered due to the much larger contact area. I am pretty sure Element 14 still sells wire-wrap tools.
I have carefully "unwound" each wire from the main board and cut the wire so that all leads are no shorter than the originals.
I have now placed the complete assembly into a sealed clear plastic package and then in a strong custom made box to protect it when being shipped.
