![My temp gauge and tach were not working so I replaced SI batteries but realised that there is a small repair done on pcb trace and some of the transistors are blown. My temp gauge and tach were not working so I replaced SI batteries but realised that there is a small repair done on pcb trace and some of the transistors are blown.](https://preview.redd.it/my-temp-gauge-and-tach-were-not-working-so-i-replaced-si-v0-6xoth7jpsnra1.jpg?width=4032&format=pjpg&auto=webp&s=e46cbff4072f6665a1b175b0fc6185837f8aef33)
My temp gauge and tach were not working so I replaced SI batteries but realised that there is a small repair done on pcb trace and some of the transistors are blown.
![Sanyo Lithium CR14250 Replacement Battery for E23 E24 E28 E30 E32 E34 Cluster SI-Board - Ivo Christov BMW E28 specialist Sanyo Lithium CR14250 Replacement Battery for E23 E24 E28 E30 E32 E34 Cluster SI-Board - Ivo Christov BMW E28 specialist](https://www.e28specialist.com/wp-content/uploads/2022/09/14250-6.jpeg)
Sanyo Lithium CR14250 Replacement Battery for E23 E24 E28 E30 E32 E34 Cluster SI-Board - Ivo Christov BMW E28 specialist
![VDO and Motometer E30 SI board Capacitor electronics and batteries (lithium battery board) | RTS - Your Total BMW Enthusiast VDO and Motometer E30 SI board Capacitor electronics and batteries (lithium battery board) | RTS - Your Total BMW Enthusiast](https://www.rtsauto.com/wp-content/uploads/2023/10/E30SiboardBatteriesandCapacitors.jpg)