Tube Amps / Music Electronics
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|2/15/1997 9:34 AM|
||Morley pedal bulbs|
A student of mine requested that I fix his Morley Power Wah Boost.
Upon inspection, the bulb which alters the photocells is
burnt out and needs replacing. Any ideas what it is usually
replaced with? Is it a proprietary Morley bulb or something more
This is one of those big floor pedals with AC power. I measure
+40VDC going through the bulb.
Incidentally, the construction on this thing is, well, tenuous in
many respects. All the crucial parts seem to be held down or
together with tape (which has lost its adhesive qualities over time).
The photocells seem like they can be easily bent in different
directions to yield lesser and greater light sensitivity (something
which those of you with functioning pedals might want to try
futzing around with.
|2/17/1997 10:29 AM|
Call Morley direct, they are in business at 800 284-5172. Hope this helps,
|2/20/1997 9:03 PM|
"Helps?" That's an understatement.
I phoned the 1-800 number you gave and connected up with one of
the techs (the name escapes me). He indicated that the current
Morley owners did not purchase the rights to the older AC
powered pedals, and have no mandate/requirement to fix them.
HOWEVER, when he heard that it was a burnt out bulb, he said he
would simply mail me one, no charge. I'm impressed. That's
what I call customer relations.
Thanks Chris. Thanks Morley.
|10/1/1997 8:37 PM|
I once replaced the bulb in a similar Morely volume pedal. Hopefully, your bulb is similar. There was a very tiny '387' stamped on its metal base, which corresponds to an easily available T-1 3/4 midget flange base incandescent lamp.
The 387 is rated at 28 V, 40 mA. You measured 40 VDC going TO the bulb, but once it is in place, the series resistor will drop the 40 V down to the proper level.
Digi-Key, Mouser, ect. will have this bulb, but I got mine at the local electronics store (not Radio Shack).
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