240V stereomour
- Thread starter srhombeus
- Start date
Well that's odd, that pin of the 9 pin socket has a PC board pin instead of a solder lug.
That pin will still work if you'd like to use it, you will have to carefully wrap your wire around it.
That is very unusual, I don't believe that I've ever seen that production error from our socket supplier.
-PB
That pin will still work if you'd like to use it, you will have to carefully wrap your wire around it.
That is very unusual, I don't believe that I've ever seen that production error from our socket supplier.
-PB
. My only concern was,there are two cables wrapped around this pin.But I dont think that will be a problem with the connection..I've finished the assembly today.But unfortunately there's no sound in left channel and there are cracks,pops in both channels.I've changed the inputs and tubes but it's allways left channel.I don't know where to start.Resistance check looks okay,tubes glows properly.But I think there are some problem with AC/DC checks.. 2a3 tubes looks 2 volt instead of 2,5 for example.
The place to start would be with posting your DC voltages.
-PB
-PB
Can you take a photo of what your volume pot looks like? And maybe some general photos of the build.
It would be very unusual for the pot to dissipate any heat whatsoever.
It would be very unusual for the pot to dissipate any heat whatsoever.
srhombeus said:
The amp has to be plugged in and turned on to measure voltages.
I checked again the solder points.But now,when I turn on the amp,there's no smoke but there's some sound like small explosion.. when i hear it,i turn off the amplifier.I don't know where this sound come from.And now,the two leds near to the volume pot doesn't glow. I checked the fuse,there's no problem with it.It's working..
Maybe you can just start with the pictures?
I've noticed that i made a big mistake.. After changing the broken 330 kohm resistor,I forgot the connect the cable going through bA pad - bB pad . I hope I didn't damaged any 2a3 tube etc. Now i will reorder active load pc board. Because it's really dirty with remaining solders and i don't know which parts are damaged. And also i need a potentiometer,i plan to buy alps blue velvet 100k if it's suitable for stereomour. I think that will be the longest assembly process in the forum,i am a real amateur. Sorry for asking too much question,but i am waiting for your advices.
Grainger49
New member
A 100k Ohm volume pot is the universal replacement for all Bottlehead products.
Grainger49 said:
Thanks for your reply. I think the problem is in active load pc board,probably leds. How can i check the power supply board correctively? Because I heard little explosion sound 2 times when i turn on the amp,i think it was from 2 leds blown.. I have to understand which parts are defeated before ordering.
Sorry for asking too much questions.But today I plan to order new active load pc board with all parts.How can I be sure that other parts are all okay? Fuse is okay,there was no smoke from transformators.Tubes looks okay. Just two leds are not glowing,and there was a smoke from potentiometer,today i placed an order for alps blue velvet 100k. And I will replace an order for the remaining parts after your informations. For the resistance measurements,only terminal 2 looks not in range.All of them looks ok. I can't find all parts in my country,so i am thinking to order all needed parts in one time. Thanks again.
Does your 100K pot look OK?
You may have had the solder joint on pin 1 of the 9 pin socket touch pin 2 of the 9 pin socket, which would warm up your pot pretty quickly.
-PB
You may have had the solder joint on pin 1 of the 9 pin socket touch pin 2 of the 9 pin socket, which would warm up your pot pretty quickly.
-PB
