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  1. Procter2812

    Hum in Marshall artiste 100 (2068)

    Could be lead dress, filter caps, a valve? Id start by cleaning all sockets/jacks... swap out pre amp valves.. Try pulling each stage one at a time e.g. V1 first to see if the hum stops at any stage. Any modifications been done to the amp? e.g. transformer changes? Could be lead dress Check...
  2. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Replaced all filter caps with F+T... Sounds great! Just one niggle. Treble control still is adding hum/buzz. Im guessing the treble cap in the tone stack is leaking.. Traced it back to that anyway. 0.9vdc on the treble pot after the treble cap... Anyone else found this? ordered some NOS 270pf...
  3. Procter2812

    JTM45 Marshall Hum...Need an opinion.

    Have you got the old set of valves to put in and compare? Try swapping out the pre amp valves first one by one. It's not likely caps as that would be around 120hz
  4. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Sweet, il go with that. Just waiting for places to get them in stock! Some place in the UK has NOS Hunts that are reformed for £6.50. But il stick with the F+T or TAD, the TAD are quite a lot cheaper, and I'm guessing are possibly rebranded F+T? (Made in Germany)?
  5. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    I'm used to using JCM 800s, so the amp does seem to be looser than my others. But I like it. What would you guys suggest? Keep the 4x dual 32uf or go with 2x 32uf and 2x 100uf? It seems as though it was laid out in the 4 x 32uf so I might go with that as it will feel different to my others.
  6. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Well it's got 3 x 32uf Duals and a 100uf on the main board, then two 50/50uf up on the top. From what I can see it looks like it had 4 x 32uf duals on the main board going on what what looks like was soldered there but one has been replaced for an RS 100uf for the screens. From what I gather...
  7. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Just installed the new Power Transformer and bias caps. Fired right up and sounds great... however there is quite a bit of background noise which increases dramatically as the treble knob and presence is turned up, but the noise decreases when both volumes are at full? Im going to order new...
  8. Procter2812

    86 Marshall 2210 which preamp

    Iv got an August 86 Model, i don't have any channel spill which I'm guessing is the revised circuit, however the reverb is pretty noisy, ended up changing either V3/4 for an ECC81 to tame it..
  9. Procter2812

    Which Marshall for me?

    Blasphemy
  10. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Nice one guys, I mean the power supply board, it has 4 or so 32+32uf Hunts axial cans, then two 50uf+50uf cans on the top of the chassis are ERIE which iv got replacements for, just need the power supply caps changed out, all pre caps look good, was looking at the F&T as they look like a neat...
  11. Procter2812

    Hunts 32+32uf Filter Caps Replacement

    Has anyone got any recommendations on what to replace the HUNTS* 32+32uf filters in my Super PA with.. Noticed nowhere seem to do the cans with the same layout e.g... two positives on one side and the negative on the other.. As the caps are wired in parallel, could i use say one 80uf single 500v...
  12. Procter2812

    1969 Super PA Mains Transformer Problem

    after all that.. Fired it up under load and it started smoking. Got a new transformer on order!
  13. Procter2812

    1969 Super PA Mains Transformer Problem

    Iv had a deeper look into it and still can't get more than 3VDC on PIN 5 of the sockets when the bias supply is hooked up, tried every way. Something definitely isn't right with this transformer. Everything else seems fine, the valves that were in it before (XF2) Had signs of red plating, so I'm...
  14. Procter2812

    1969 Super PA Mains Transformer Problem

    Its pretty hard to get good pictures with the wires in the way as the secondaries are disconnected from the board.. The 171Vac either side is good so far as are the Heater voltages, and measuring between the yellow wire and the White i get 88VAC which seems good, and i get the same with the...
  15. IMG 1899

    IMG 1899

    • Procter2812
    • Media item
    • Comments: 0
    • Album: SUPER PA
  16. IMG 1900

    IMG 1900

    • Procter2812
    • Media item
    • Comments: 0
    • Album: SUPER PA
  17. IMG 1901

    IMG 1901

    • Procter2812
    • Media item
    • Comments: 0
    • Album: SUPER PA
  18. SUPER PA

    SUPER PA

  19. Procter2812

    1969 Super PA Mains Transformer Problem

    Just had another look and theres a sticker saying DE (Dagnall)l T3715. can't find anything anywhere online about it! Il try get a picture up for a better idea. Has the copper around the transformer like the T2562, but has more wires on the primary side, makes me wonder if the amp has been wired...
  20. Procter2812

    1969 Super PA Mains Transformer Problem

    Just picked up a broken 69 Super PA 100w, one of the first metal face ones from Aug 69 with lay down PT. Only hitch is... The PT seems shot. Got a steady 240 going into the primary yet on secondary only getting 171 VAC either side of CT for HT which is a little low unloaded, 3.2 VAC heaters, and...

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