Service Manual for RAMSA WP 1400

[Thedj]

Hello guys! , i dont know where a post my thread, i think posted here.


I need e service manual for my RAMSA WP-1400 amplifier.

Last time i use them , all is fine sounds graets, but yerterday i power-on the amplifier and i dont know what pass , the sound is tooo slow and if i level up the gain . Makes the sound saturation. i try use other inputs (pc, cell phone) but nothing pass.

I discover a problem in frequency divider , i have one in each speakers. i replace frequency divider but the amplifier not returns to normal.

Can you help me please?

Thx

Sorry for may bad English.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[paddy]

Did you have any luck finding a service manual, I have one channel of pure noise at the moment was hoping for the trimming specs.

 

[Thedj]

Did you have any luck finding a service manual, I have one channel of pure noise at the moment was hoping for the trimming specs.

Sorry but i dont have lucky. The service manual disapears on internet. I search for months but nothing found...

🙁🙁

 

[tibon]

hope this helps

its avail here:
PANASONIC WP-1200 WP-1400 Service Manual download, schematics, eeprom, repair info for electronics experts

 

[tibon]

WP1400 1 side amp issue

Did you have any luck finding a service manual, I have one channel of pure noise at the moment was hoping for the trimming specs.

precision Resistor R497 or R499. Both same value. 10K for WP1200, 18K for WP1400, usually they overheated and became open circuit.