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Back to Measurement Equipments 3

Stereo Modulator VP-7637A ( Panasonic )

[Outline] [Trouble-shoots]
[Power on drift of the pilot signal level] [Disassembling of the clock gen.] [Replace the capacitors]
[Check the voltage of the memory back up battery ]

Fig.1  12 capacitors on the pwb( all 16V 10uF).	Fig.2 Remove the all of  capacitors.

Fig.3 Cleaning around the pads by ethanol .	Fig.4 SMD capacitors were expensive...

Fig.5 New (left ) and old (right) capacitors.	Fig.6 The diameter is not same.

Fig.7 The size of the pads are fit to new capacitors.	Fig.8 After replace all of the chemical capacitors.

Fig.9 Check the pilot signal level.	Fig.10 The level become correct (10%) and stable.