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FDP Forum / Amp Mods, Repairs, and Projects / Pilot lamp flicker

Peppy

Tucson

Nov 22nd, 2016 06:13 PM   Edit   Profile   Print Topic   Search Topic

Repaced the burned out lamp in my amp. The new one...and the 'other' new one...keep flickering. If I hit a loud chord, flip a toggle switch on the amp...flickering on and off. It does not seat properly is what I am ascertaining. Any solution? Thanks.

Peppy

Tucson

Nov 22nd, 2016 06:33 PM   Edit   Profile   Print Topic   Search Topic

Ignore. Fixed.

Peegoo
Contributing Member
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Notice the music

not the guitar brand
Nov 22nd, 2016 08:00 PM   Edit   Profile   Print Topic   Search Topic

What was the fix?



Peppy

Tucson

Nov 22nd, 2016 08:28 PM   Edit   Profile   Print Topic   Search Topic

Muscle, at the risk of breaking the lamp holder. From what I just read, many of the Chinese 47s don't make good contact. I decided mine would.

Hammond101
Contributing Member
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So. Cal. USA

Nov 23rd, 2016 10:43 AM   Edit   Profile   Print Topic   Search Topic

I prefer adding to the solder glob in the center of the lamp rather than muscling the socket.

Peegoo
Contributing Member
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Notice the music

not the guitar brand
Nov 23rd, 2016 03:08 PM   Edit   Profile   Print Topic   Search Topic

That's a good solution. Changes the outside dimensions of the blub and forces it into contact.


Yeah, I typed 'blub' on porpoise.

catnineblue

LA , Calif

I try my best
Nov 23rd, 2016 03:58 PM   Edit   Profile   Print Topic   Search Topic

I still have the original bulb in my mid 70's MM bass amp chassis and the same lamp socket. I got some bulbs maybe 10 years ago from AES maybe 10 in a box and had no trouble with them which I used in my AA763 Champ build. Maybe these were better 10 to 12 years ago.

amphead4
Contributing Member
********

Cincinnati, USA

Nov 28th, 2016 06:17 AM   Edit   Profile   Print Topic   Search Topic

Apology for being a bit off topic but my 1963 vintage pinball machine has 72 of the #47 lamps. Lots of flicker potential. After hours of work, there's only one that's still not bright. The problem is with a set of dirty leaf contacts somewhere, not the socket itself.

Hammond101
Contributing Member
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So. Cal. USA

Nov 28th, 2016 11:02 AM   Edit   Profile   Print Topic   Search Topic

^^very cool^^

amphead4
Contributing Member
********

Cincinnati, USA

Nov 30th, 2016 08:04 AM   Edit   Profile   Print Topic   Search Topic

Hammond101, here's a link to my machine.

Gottlieb Slick Chick

Hammond101
Contributing Member
**********

So. Cal. USA

Nov 30th, 2016 09:48 AM   Edit   Profile   Print Topic   Search Topic

I like it. Cool artwork and graphics! I haven't played a real pinball machine in maybe 30+ years. Played at the local bar all the time in the 70s.

"Tilt"

FDP Forum / Amp Mods, Repairs, and Projects / Pilot lamp flicker




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