Stk412-150 Sony Amplifier

[Midhunhere]

dear friends,
pls help me to figure out the problem.
l have a sony amplifier board (1-676-807-21), with STK412-150 IC and its transformer. Actually the board is taken out from a sony hi-fi system model no.HCD-VX77. so I want use this as a amplifier separately .Please help me ,wiring and all.....any alteration to do if.......
[email removed]

thank you....

 

[ramussons]

Do you have the schematic of the Sony system?

 

[Midhunhere]

Do you have the schematic of the Sony system?

ys..I have....

 

[Midhunhere]

ys..I have....

 

[Midhunhere]

ys..I have....

 

[ramussons]

From the schematics, it seems that no alteration needs to be done in the Power Amp Board.

Connector B is the Signal Input with a MUTE control (Gnd for MUTE, 5.0 V (?) for Un MUTE).

Connector C is the Speaker Out.

Connector L is the Power Supply - There are 2 AC voltage inputs. You will need to measure these.

Check the Jumper ( looks like) JV940. If it is open, then it looks like that's all there is to be done.

If JV940 is connected, then
Page 47 has some details about Connector M and
Page 37 for Connector C which need to be followed up.

 

[Midhunhere]

thank you very much for your kind information ...thank you,thank you,,,,,
I will check as you said sir,..

 

[Midhunhere]

From the schematics, it seems that no alteration needs to be done in the Power Amp Board.

Connector B is the Signal Input with a MUTE control (Gnd for MUTE, 5.0 V (?) for Un MUTE).

Connector C is the Speaker Out.

Connector L is the Power Supply - There are 2 AC voltage inputs. You will need to measure these.

Check the Jumper ( looks like) JV940. If it is open, then it looks like that's all there is to be done.

If JV940 is connected, then
Page 47 has some details about Connector M and
Page 37 for Connector C which need to be followed up.

.....
Conversion HCD-VX77 to my own design....