Hi Daniel !
I agree 100%!
Since my friend (tech) and me started to do inhouse repairs and
service for all my gear many years ago, we never ever had to replace
ALL capacitors in any machine, regardless of brand and type.
Especially the old Yamaha gear was and still is very reliable.
I?m 1st owner,- and my TX816 is still intact, my DX7mkII never
failed and younger devices like TG77 and TG500 work flawlessly.
Needles to say the same rules for the KX-76, KX-5, D-1500 and REV-7.
Necessary service was usually battery change and soldering in
battery holders, replacing a by roadies physically damaged display,
tact switch replacements and PSU overhaul for REV-7.
The TX816 might need a single new LED on one of the TF-1 modules and
I think about replacing the original PSU w/ this one (if at all) ...
WHEN we had to replace aged capacitors in other gear,- these
belonged to the PSU always.
AKAI S-1000 PSU capacitors leaked in both machines, S-1100 PSUs are
different and didn?t.
Ribbon cables and sockets are often culprits ...
When cables and sockets aren?t available anymore, removing socket
and solder the ribbon directly to the board was the simple solution.
That happened w/ a Oberheim DPX-1 not playing a tone, not loading
disks and showing cryptic stuff in display.
So, PSU and ALL connections (soldering joints, sockets, plugs,
ribbon cables) have to work 100% perfect before replacing anything
else.
Well, this thread is about TX802 which I don?t use, but I?d say,
repair and service on electronic gear of that era isn?t soooo
special and urgently depending on brand/model.
Finding the cause of failure is the most difficult and time
consuming,- and I won?t replace anything before being sure what it
really is.
The common buyer and user of used vintage gear is often not able to
identify cause of failure because of lack of tech skills and missing
tools for diagnostics (and repair).
To save time it?s sometimes better buying a 2nd used machine and
swap boards, then use the better one for work and the other for
parts in future.
:-)
P.
Am 04.02.2023 um 03:37 schrieb Daniel
Forró via :
It is not recommended to replace all caps, only the
bad ones. Service experts say: If it works, leave it so.
Daniel Forró
Electrolytic capacitors are dead on
most 80s Yamaha Roland Korg gear.
José Juan