lzidaric
New Member
Hello guys,
My turntable stopped working and I got another one, so i thought i could turn the turntable's inbuilt amp to something useful. I've stripped it of its housing and extended the volume and the tone knobs's wiring, so it would be more flexible to fit the new housing i made. After i made the necesary extensions i turned it on to test if it still works. It did for about 20 seconds, then the power ON Led diode went out and with it the entire assembly. After further examination i found out that two fuses went out. They were low amp 0,315's. I really don't want to scrap the amp, it may be old, but still it's useful. I attached four pictures, other three in detail.
What causes fried fuses that haven't occured before? I checked my new wiring and my tampering hasn't changed anything, I simply removed the potentiometers from the circuit boards and put wires in and soldered the wires on knobs in exact order. I havent attached the grounding wire to the housing when the circuit was stripped, but i was running the turntable once also ungrounded because i was testing something.
In the first picture the preamp is on the left, the pcb with the metal frame. On the top is the pcb with the balancers and the tone controls, it also powers the vu meters, which are visible below. The pontentiometers are in the middle with the extended wiring and the powerboard is on the right along with the transformer. Just above the transformer were five fuses of which 2 were fried. I also noticed one other thing, the bulb that illuminates the vu meters still works when i turn it on, and it is the only thing that actually works so I dont think that any components on the pcbs got fried beacuse the fuses actually saved them, so i reckon i won’t need any multimeter testing.
My turntable stopped working and I got another one, so i thought i could turn the turntable's inbuilt amp to something useful. I've stripped it of its housing and extended the volume and the tone knobs's wiring, so it would be more flexible to fit the new housing i made. After i made the necesary extensions i turned it on to test if it still works. It did for about 20 seconds, then the power ON Led diode went out and with it the entire assembly. After further examination i found out that two fuses went out. They were low amp 0,315's. I really don't want to scrap the amp, it may be old, but still it's useful. I attached four pictures, other three in detail.
What causes fried fuses that haven't occured before? I checked my new wiring and my tampering hasn't changed anything, I simply removed the potentiometers from the circuit boards and put wires in and soldered the wires on knobs in exact order. I havent attached the grounding wire to the housing when the circuit was stripped, but i was running the turntable once also ungrounded because i was testing something.
In the first picture the preamp is on the left, the pcb with the metal frame. On the top is the pcb with the balancers and the tone controls, it also powers the vu meters, which are visible below. The pontentiometers are in the middle with the extended wiring and the powerboard is on the right along with the transformer. Just above the transformer were five fuses of which 2 were fried. I also noticed one other thing, the bulb that illuminates the vu meters still works when i turn it on, and it is the only thing that actually works so I dont think that any components on the pcbs got fried beacuse the fuses actually saved them, so i reckon i won’t need any multimeter testing.