Tremolo 50w service

Marshall Amp Discussion

Moderators: pompeiisneaks, Colossal

Post Reply
User avatar
dorrisant
Posts: 2628
Joined: Tue Sep 21, 2010 1:27 pm
Location: Somewhere between a river and a cornfield
Contact:
Contact dorrisant

Re: Tremolo 50w service

Post by dorrisant »

Reeltarded wrote: ↑Fri Dec 09, 2022 4:08 pm Calling Roe. Come in, Roe. beee bedee dee deee deee de dee deee dee
😆
"Education is what you're left with after you have forgotten what you have learned" - Enzo
Top
pdf64
Posts: 2702
Joined: Sat Mar 12, 2011 9:23 pm
Location: Staffordshire, UK

Re: Tremolo 50w service

Post by pdf64 »

M Fowler wrote: ↑Tue Dec 20, 2022 7:14 pm
pdf64 wrote: ↑Thu Dec 15, 2022 3:06 pm
M Fowler wrote: ↑Fri Dec 09, 2022 2:05 pm Servicing a Marshall Tremolo 50w …
Would you mind measuring the resistance of the HT winding? ie from the PT winding lug with anode of one rectifier diode to the anode of the diode on the other lug.
TIA.
It reads 77.4 ohms

From diode to ct 39.6 and 37.6 other side.

Plate voltage 421vdc
Excellent, many thanks, great info, the resistance is lower than I expected.
It’s a 1202-118 PT and 784-139 OT?
Top
User avatar
M Fowler
Posts: 14017
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Tremolo 50w service

Post by M Fowler »

20221221_162505.jpg
Yes that's correct 1202-118 PT and 784-139 OT.

Mark
20221221_155738.jpg
20221221_155726.jpg
20221221_155711.jpg
20221221_155703.jpg
20221221_155748.jpg
You do not have the required permissions to view the files attached to this post.
Top
User avatar
M Fowler
Posts: 14017
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Tremolo 50w service

Post by M Fowler »

This amp is going up for sale soon. ? Dollar amount.
Top
User avatar
M Fowler
Posts: 14017
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Tremolo 50w service

Post by M Fowler »

Well looks like I just bought it!
Top
pdf64
Posts: 2702
Joined: Sat Mar 12, 2011 9:23 pm
Location: Staffordshire, UK

Re: Tremolo 50w service

Post by pdf64 »

Sorry to pester, but if you get chance, please could you upload a photo showing the full front panel?
TIA :D
Top
User avatar
Reeltarded
Posts: 9955
Joined: Sat Feb 14, 2009 4:38 am
Location: GA USA

Re: Tremolo 50w service

Post by Reeltarded »

M Fowler wrote: ↑Wed Dec 21, 2022 10:40 pm Well looks like I just bought it!

:o

Is it for sale now?
Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.
Top
User avatar
M Fowler
Posts: 14017
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Tremolo 50w service

Post by M Fowler »

pdf64 wrote: ↑Thu Dec 22, 2022 2:51 pm Sorry to pester, but if you get chance, please could you upload a photo showing the full front panel?
TIA :D
https://ampgarage.com/forum/download/fi ... &mode=view
Top
pdf64
Posts: 2702
Joined: Sat Mar 12, 2011 9:23 pm
Location: Staffordshire, UK

Re: Tremolo 50w service

Post by pdf64 »

Sorry, I meant the amp chassis front panel, rather than the cab.
Top
User avatar
M Fowler
Posts: 14017
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Tremolo 50w service

Post by M Fowler »

Here is the amp.
20230101_124051.jpg
20230101_120747.jpg
20230101_120743.jpg
20230101_120738.jpg
You do not have the required permissions to view the files attached to this post.
Top
Post Reply

Return to “Marshall Discussion”