Search found 13628 matches

by M Fowler
Wed Dec 21, 2022 9:54 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

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

Mark
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by M Fowler
Wed Dec 21, 2022 9:50 pm
Forum: Garage Talk
Topic: Mortality - Some Thoughts
Replies: 31
Views: 4537

Re: Mortality - Some Thoughts

The time is coming soon, so my wife designed our headstone.
Mark
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by M Fowler
Tue Dec 20, 2022 7:16 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

Head cab. Myles is that your paint work?
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by M Fowler
Tue Dec 20, 2022 7:14 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

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
by M Fowler
Tue Dec 20, 2022 6:43 pm
Forum: Dumble Discussion
Topic: Dumble chassis
Replies: 17
Views: 3485

Re: Dumble chassis

Mark, could we do a test with the #60 circuit? I think I have a full and correct layout as well.
Sure I would pay for chassis and panels plus shipping.

Mark
by M Fowler
Sun Dec 18, 2022 3:40 am
Forum: PCB Design
Topic: Cesar Diaz cd100 scheme
Replies: 19
Views: 95900

Re: Cesar Diaz cd100 scheme

I built a P-xx Diaz based on photos of a friend's combo amp.
It's a Fender Deluxe Reverb with switch boost.

Mark
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by M Fowler
Sat Dec 17, 2022 8:55 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

Sure I can measure.

It has a beat up 4x12 cab.
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by M Fowler
Sat Dec 10, 2022 6:46 pm
Forum: Technical Discussion
Topic: GZ34S vs 5U4GB --- voltage drop question, plus a discussion of SS diodes as backup
Replies: 17
Views: 1225

Re: GZ34S vs 5U4GB --- voltage drop question

On my one recent Dlx Rvb build I tried 5ar4, 5v4, and 5u4 because the voltages were.just too damn high. Settled for 5u4.
by M Fowler
Sat Dec 10, 2022 6:42 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

Small box head with valance.
by M Fowler
Fri Dec 09, 2022 2:26 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Re: Tremolo 50w service

I have 4 NOS caps to use in my SL100 Marshall clone build.
by M Fowler
Fri Dec 09, 2022 2:05 pm
Forum: Marshall Discussion
Topic: Tremolo 50w service
Replies: 24
Views: 5120

Tremolo 50w service

Servicing a Marshall Tremolo 50w pretty much original a few things have been worked on. Power cord is completely crumbling in my hands. One wire on standby switch is undone. Pilot light broke. Fun amp for me to bring back to life. 20221209_075455.jpg 20221209_075500.jpg 20221209_075506.jpg 20221209_...
by M Fowler
Mon Dec 05, 2022 6:59 pm
Forum: Technical Discussion
Topic: New SLO 100 clone
Replies: 47
Views: 7357

Re: New SLO 100 clone

Nice boards and build.
by M Fowler
Fri Nov 18, 2022 3:45 pm
Forum: Dumble Discussion
Topic: Dumble chassis
Replies: 17
Views: 3485

Re: Dumble chassis

Yes that plate is exactly what I like for the OD Reverb.
by M Fowler
Fri Nov 18, 2022 1:04 am
Forum: Technical Discussion
Topic: New SLO 100 clone
Replies: 47
Views: 7357

Re: New SLO 100 clone

Well actually my son helped me on Monday to move a bunch of amps, so I was not done.

Sold a JTM50 amp/chassis only, no cab last week and that thing kicks butt through a Marshall cab.

Mark
by M Fowler
Fri Nov 18, 2022 12:48 am
Forum: Dumble Discussion
Topic: Dumble chassis
Replies: 17
Views: 3485

Re: Dumble chassis

I want an Overdrive Reverb chassis or plates but..........

Mark