Recent content by usalabs

  1. U

    Where can I find Ferric Chloride Hexahydrate in the USA?

    When I was in the UK, I used to build my own projects from the ground up, from creating the schematic, to creating PCB's, etching the tracks, drilling the component lead holes, etc etc, all the materials I could get from a huge electronics store called Maplin Electronics, but since I moved to...
  2. U

    Help wanted on EL34 and 12AX7 tubes

    Hi everyone, sorry I haven't replied for a while, and no I wasn't in the hospital with electric shock lol, even though I have had 100s of volts through me many a time in the past,,,,,at one time, I even had over a thousand volt discharge throw me on my back from the anode cap of an old tube TV...
  3. U

    Help wanted on EL34 and 12AX7 tubes

    The amp uses 4xEL34's as box standard and can use the 6L6's, I believe the 6L6's are 60W a pair, whereas the EL34's are only 50W a pair. I have the same schematic 73's de Edd posted. Regarding the output transformer, seeing as I can not get the exact manufactures technical details for that...
  4. U

    Help wanted on EL34 and 12AX7 tubes

    @73's de Edd I can't do the steps you suggested because the volume controls either the master or channel volumes have no affect on the steadily rising crackling, and it gets to a point that it's way to loud, but by then, those power tubes have got to a point that the orange is very bright, so...
  5. U

    Help wanted on EL34 and 12AX7 tubes

    73's de edd has the schematic in a lower post. Oh there's no problem there with safety lol, I've had so many HT shocks from tube anodes, I would have thought I l learnt my lesson by now lol, I've even been thrown on my back from a static discharge from the anode cap of an old Grundig tube TV...
  6. U

    Help wanted on EL34 and 12AX7 tubes

    The plates glow orange. I'll explain the steps that lead to the orange glows. 1........turn on the standby switch 2........Power on the head (amp head is a description for the actual amp that uses separate cabinets for the speakers, whereas a combo would be the amp and speakers built into one...
  7. U

    Help wanted on EL34 and 12AX7 tubes

    I'm trying to repair a guitar amp head, and it uses 4xEL34 matched pair power tubes for a total output of 120W and 4x12AX7 pre-amps, now I've replaced all the tubes, and checked for bad solder joints, and even checked the power tubes bias, and heater voltages according to the schematic, and I...
  8. U

    RE-Maplin Electronics in the USA.

    I really don'y know why the moderator closed out the thread:- https://www.electronicspoint.com/threads/maplin-electronics-in-the-usa.280951/#post-1710528 I can understand because of other people's replies were actually off topic, but that has nothing to do with my OP, but I wanted to reply to...
  9. U

    Maplin Electronics in the USA?

    I don't know how, because 2 years a go, I bought a small shack and put it in the garden, and started to order bulk parts, including FeCl3 (known as Ferric Chloride Hexahydrate) for PCB etching, and 2 weeks later I got a visit from the EPA wanting to know if I'm a registered pharmacist, and...
  10. U

    Maplin Electronics in the USA?

    OK, I was searching the net, and come across this forum, where someone asked if there was a Maplin Electronics in the USA, and the replies were something to the affect of 'There is no Maplin in the USA' so I would like to take this opportunity to explain why:- Americans are very, very paranoid...
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