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Pace SS series power supply problems. |
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Pace SS series power supply problems. |
The main reason for PSU failure in the SS9000/9200 series is due to C9, the chopper drive coupling capacitor drying up. I would advise replacing this component whenever you take a receiver to pieces. Certainly, if the PSU has 'blown up', you MUST replace C9.
The best idea is to obtain a PSU repair kit. This provides uprated components to help prevent further trouble.
| FS1 | 1 Amp A/S. |
| Q1 | BUT11A |
| U23 | TDA8380 |
| R12 | 4K7 Ohm, non-flammable. |
| R13 | 0.22 non-flammable. |
| D6 | 5.6 Volt Zener |
| C9 | 1 micofarad 35 volt. |
I think these are all the parts supplied in the basic Pace kits, depending where you buy them you may get some have extra parts.
| D1, D2, D3, D4 | Bridge rectifier, any may be S/C. |
| R1 | 4.7 ohm, 2 watt, may be O/C. |
| C7 | 47 Microfarad 400 volt, may be O/C or S/C. |
| T2 | Mains transformer, may be O/C or S/C between windings. |
One point to bear in mind, the primary side of the transformer is NOT isolated from the mains. This means you cannot measure voltage readings with the meter lead clipped to the chassis - you need to use the negative end of C7. Please be careful, all this side of the transformer is LIVE TO THE MAINS and you could get a nasty shock (I've had LOADS! over the years).