Roland Huisman
Veteran Member
While talking to a friend about an insanely priced 5160 on a local sale, I thought let's find my own 5160 which was still in a move box for about 6 of 7 years now... Restored the machine and 5154 monitor back in 2011. But will it still work? Well no... The monitor started nice, but the PC was dead. I immediately suspected a dead tantalum capacitor on a power line some where. So first pulled all the boards. The power didn't start. Then I disconnected the two powerplugs from the motherboard, and the power turned on, harddisk started to spin.
![01 unboxing after 7 years.jpg 01 unboxing after 7 years.jpg](https://forum.vcfed.org/data/attachments/64/64974-b879c145fa1ccfdf1fc19f1cdecfd8d1.jpg)
![02 inside PC.jpg 02 inside PC.jpg](https://forum.vcfed.org/data/attachments/64/64975-f248277a3689381e5d17c2790f1670d1.jpg)
![03 boards.jpg 03 boards.jpg](https://forum.vcfed.org/data/attachments/64/64976-041f7a4277972bb92e57a709b0f270b6.jpg)
![04 short in motherboard power lines.jpg 04 short in motherboard power lines.jpg](https://forum.vcfed.org/data/attachments/64/64977-763d645d35f38acbe7c79ba73a13373a.jpg)
So there was a short in one of the power lines. The +12 line was bad. So I attached a LAB power supply limited ad 0.5amp and checked the board with a heat camera. One capacitor clearly heated up here. So I desoldered one side to see if the short disappeared.
![05 short in +12V.jpg 05 short in +12V.jpg](https://forum.vcfed.org/data/attachments/64/64978-b110138d749dfb3a7c9760ac9e86f583.jpg)
![06 run current trough short.jpg 06 run current trough short.jpg](https://forum.vcfed.org/data/attachments/64/64979-56e54b5c5917480d67be00fd44c1909e.jpg)
![08 broken cap.jpg 08 broken cap.jpg](https://forum.vcfed.org/data/attachments/64/64981-cd69b016b87c3975baf2495111fd3a9d.jpg)
So that was the bad capacitor. Replaced it and the machine worked again...
![10 msd.jpg 10 msd.jpg](https://forum.vcfed.org/data/attachments/64/64984-c69e3709bc2e74d2fa34d6ed8e804d6a.jpg)
Fun to see this machine back online. That was quite a while ago...
I have some fun stuff like a CM100 CD-rom player and a Cipher tape streamer for the machine. But even these youtube recordings are vintage now...
Regards, Roland
![01 unboxing after 7 years.jpg 01 unboxing after 7 years.jpg](https://forum.vcfed.org/data/attachments/64/64974-b879c145fa1ccfdf1fc19f1cdecfd8d1.jpg)
![02 inside PC.jpg 02 inside PC.jpg](https://forum.vcfed.org/data/attachments/64/64975-f248277a3689381e5d17c2790f1670d1.jpg)
![03 boards.jpg 03 boards.jpg](https://forum.vcfed.org/data/attachments/64/64976-041f7a4277972bb92e57a709b0f270b6.jpg)
![04 short in motherboard power lines.jpg 04 short in motherboard power lines.jpg](https://forum.vcfed.org/data/attachments/64/64977-763d645d35f38acbe7c79ba73a13373a.jpg)
So there was a short in one of the power lines. The +12 line was bad. So I attached a LAB power supply limited ad 0.5amp and checked the board with a heat camera. One capacitor clearly heated up here. So I desoldered one side to see if the short disappeared.
![05 short in +12V.jpg 05 short in +12V.jpg](https://forum.vcfed.org/data/attachments/64/64978-b110138d749dfb3a7c9760ac9e86f583.jpg)
![06 run current trough short.jpg 06 run current trough short.jpg](https://forum.vcfed.org/data/attachments/64/64979-56e54b5c5917480d67be00fd44c1909e.jpg)
![07 capacitor heats up.jpg 07 capacitor heats up.jpg](https://forum.vcfed.org/data/attachments/64/64980-6ed8e88aca2e0d8c6dc07df8d24e29b9.jpg)
![08 broken cap.jpg 08 broken cap.jpg](https://forum.vcfed.org/data/attachments/64/64981-cd69b016b87c3975baf2495111fd3a9d.jpg)
So that was the bad capacitor. Replaced it and the machine worked again...
![09 up and running again 2.jpg 09 up and running again 2.jpg](https://forum.vcfed.org/data/attachments/64/64983-3e3953be81f511abb433e6ea551ccf03.jpg)
![10 msd.jpg 10 msd.jpg](https://forum.vcfed.org/data/attachments/64/64984-c69e3709bc2e74d2fa34d6ed8e804d6a.jpg)
Fun to see this machine back online. That was quite a while ago...
I have some fun stuff like a CM100 CD-rom player and a Cipher tape streamer for the machine. But even these youtube recordings are vintage now...
Regards, Roland