Quad 33 Full Component
Replacement Service 33FCRS1 @ £250.00
If you opt
for this more expensive option, all the resistors capacitors and
semiconductors throughout your Quad 33 will be replaced with modern low noise
high quality components. If the bare PCBs, slot in cards, sockets,
switches, fuse, pots, transformer and the PCB boards are in good condition they
will be reused. If any fail our test, we will inform you before going ahead with
you only go for this option if your Quad 33 is in physically good condition.
e.g., good paintwork, push button switches functioning correctly, edge contacts undamaged, case
intact. If you are unsure we will check for free (you are of course
responsible for the cost of delivery and return).
the Rs & Cs are replaced on the motherboard too!
What we do:
After verifying that your 33 'parts to keep' are
in good condition (we inform you if any are not); we strip all the existing
components from the seven PCB boards.* We then clean off the solder
and flux residue and re-populate each board with new high quality
components. For example, the resistors are 1% metal film types. This allows
the DC operating points and gain setting components to be optimised and
reduces the inherent noise and improves reliability. Likewise for the
capacitors and semiconductors.
The legend light is modified to a white diffused
LED circuit. This gives a pleasing clean looking legend. If you prefer the
original 'dull lamp orange' we can fit an orange led instead.
We modify some components in value and rating to
improve performance, this includes the PSU smoothing capacitors, rectifiers,
bias resistors and response tailoring components. Nothing drastic, just
sensible improvements so the system still has the smooth original sound as
it was when first unboxed.
The push button switches are individually
dismantled, contacts cleaned and reassembled. A similar dismantling action
is carried out on the slider pot. If the switched volume control and tone
pots are in good working order, we clean the wipers and tracks with IPA. If
not, they are replaced with modern nylon spindle controls. The edge
connectors are checked for integrity and cleaned.
Everything is then assembled back in place and the
system is then checked for correct operation on. Finally a full listening
test , PAT and bench soak test is carried out.
As you can imagine this is a labour intensive
operation but the end result makes the increased outlay very worthwhile.
If your old 33 PCB boards are damaged, it is obviously
pointless for us to remove the old components and fit new ones. Luckily, we
can supply new pre-populated replacement PCBs at a nominal extra charge.
The examples in the image opposite are typical
examples. The top left PCB has lifted copper edge contacts, after the
gold contacts were soldered over by an over keen DIYer ! The fault with the
lower left image is obvious. The damage was probably caused in an accident,
e.g., transit damage or the 33 being dropped.
The same applies to poor or damaged 'top entry' edge
connectors. We can fit replacements if necessary. Currently we do not have a
source of new side entry edge connectors for the rear slot in cards. If
yours are damaged we can only fit salvaged ones.
If you have a 33 and you want it brought up to the
best possible working condition with our ultimate full replacement service,
sent it to us for appraisal. Alternatively contact Rob on 01905 821737 for
*PSU, Pre amp, L/output, R/output, Disc card,
Tape card, Tone motherboard
NEW THE ULTIMATE HIGH PERFORMANCE CIRCUIT UPGRADE 33UHPCU @ £270.00
This option uses a similar replacement procedure to the full through hole
component service 33FCRS above but we completely replace the old circuits with
modern high performance circuits designed in house. The new PCBs slot straight
into the existing slots. Click
here for details.