Hi all
The board is missing two resistors just on top of 393 IC. If anybody know about the parts please help me to fix this. Attaching the pictures.
The board is missing two resistors just on top of 393 IC. If anybody know about the parts please help me to fix this. Attaching the pictures.
Download the following SM and look at page 7. Are they the same?
HERTZ EP1D Service Manual download, schematics, eeprom, repair info for electronics experts
HERTZ EP1D Service Manual download, schematics, eeprom, repair info for electronics experts
Yes it is exactly the same. Will this amp oscillate without main rectifiers? I am not getting no vcc voltage on ic.
Rail voltage is possible only if I have rectifiers on board. As I install rectifiers it going into protect. I removed them to test small voltages.
If you power up through a limiter, will it go into protect?
The following seem o be in conflict. Please clarify.
The following seem o be in conflict. Please clarify.
I mean rail voltage comes from main rectifiers right.
Without them in board no rail voltagebis generated.
If I remove the main rectifiers amp is coming on. But with main rectifiers amp goes straight to protect and tries to start and protect. It keeps cycling. This is with current limiter.
With current limiter also it goes into on and protection cycle.
Without them in board no rail voltagebis generated.
If I remove the main rectifiers amp is coming on. But with main rectifiers amp goes straight to protect and tries to start and protect. It keeps cycling. This is with current limiter.
With current limiter also it goes into on and protection cycle.
There are two optocouplers in the driver area, one optocoupler at a time, bridge terminals 1 and 2. Does bridging either optocoupler stop the amp from going into protect?
Are the output FETs in the circuit?
Are the output FETs in the circuit?
Will the amp produce rail-rail oscillation with IC 6 bridged?
If so, does it also produce clean audio?
If so, does it also produce clean audio?
No it is not producing oscillation as i on the amp it oscillates for just fraction of second and it cuts off..