You've traced the fault to a blown transistor and the schematic says BC640. You need the exact part, not a 'close enough' swap that'll fail in a week. This is the BC640 PNP transistor, sourced through JAYCAR's component line. Pull it off the bench, solder it in, and move on to the next job. RRP $5.00. Add to cart when you're ready to close that repair
| brand | JAYCAR |
| part_number | ZT2180 |
| component_type | Transistor |
| polarity | PNP |
| model | BC640 |
| category | Electronics & Components |
| subcategory | Electronic Components |
| rrp_aud | 5 |