Derek92994's 700 Ser II White Oak conversion

Yeah got picos. I will place an order soon, if you think of anything else that may be needed please let me know. Going to get a pizza then I will put the wopl back in the cabinet. Scotch, pizza and audio bliss
 
  • Like
Reactions: J!m
Been running the amp daily for a couple of days. I heard a pop before but dismissed it as a CD artifact. Heard a much louder pop just now, the amp continued to play music for the few seconds before I hit the power switch. This time it seems nothing blown, powered it up and down about 3 times, relays click, all normal (speakers disconnected just in case). Its making me nervous, so I will go back to spare amp tonight, and await further advice. :mad:
George (pennysdad) mentioned the transformer as a possible culprit, just throwing that out there, I personally have no idea myself.
Repair History: Rev D board replaced with Rev G1, 2 outputs (95’s, right channel) and 2 fuses replaced on 2 separate occasions, same symptom, loud pop from speaks.
 
I should also mention one of the main caps has a dent in the bottom of it but it has run fine for 6 years.
 
Ok, get it opened up Darc. Power on and start feeling the heatsinks on on the predrivers and MPSA 42's...NOT the low voltage power supplies, they run hot anyway...
 
2 or 3 amp would help if you do experience a short while testing instead of the 5 .
 
laatsch55 said:
Ok, get it opened up Darc. Power on and start feeling the heatsinks on on the predrivers and MPSA 42's...NOT the low voltage power supplies, they run hot anyway...
Click to expand...

ok where are these components?
 
The TO-220's laying oin the back lower part of the driver board, the 42's are the 3 small ones in a row....
And then take low voltage measurements on each side...from the test points.
 
I will go purchase some 2 or 3 amp fuses, they also have to be agx?
 
Should have. I will go to jaycar electronics.

i think i have found the parts you want me to test, pictured below. I will use a thermal gun.
1320E742-0067-4932-8EC2-67E6868F11FF.jpeg96425548-C692-4CB7-A2A0-035791AE13B6.jpeg
im heading to electric shop now. Touch base when i get back
 
You must log in or register to reply here.
Back
Top