Job Number

0112-31

Equipment type

3-1 Mini System Stereo

Maker + Model #

Aiwa NSX-S111

Made in

Comments

BAD

1

Completely dead

GOOD

1

Full repair description and observations

1

The outputs of the a.c. mains transformer were found to be 0V.

2

The resistance of the primary coil  was found to be high (open), and was further comfirmed from the circuit diagram and also was confirmed by Aiwa technicians at Fleur De Lys.

3

On replacing the bulky transformer, the unit started to work fine.

Repair summary

AC MAINS TRANSFORMER - PRIMARY OPEN CIRCUIT

Precautions, fouls and advises

1

A careless mistake made me turn crazy for a moment. When I placed the transformer the unit did not operate and I was terribly shocked since I thought that I had bought the expensive transformer uselessly since it was not the  faulty component, or the one they sent me rom UK was also faulty. However I realized that by mistake I fitted again the original faulty one. I had to desolder it again, and when placed the good one, the unit worked perfectely – phew!

2

Always not the AC input selector switch. It was accidentaly on the 110V and this caused to blow the fuse.

1

The transformer was initally stated to cost LM18 locally from Cutajar parts, while from telepart UK it was about LM24. Thus I decided to order it from Malta. When I asked about the order I discovered that the price was going to be LM 25. Since Cutajar did not phoned to tell me the transformer has arrived after 2 months, I ordered it from Telepart UK.