Evening guys. Please can anyone help me identify a suitable replacement for this component. Part of power supply on Technics cassette deck.
Many thanks, J
Many thanks, J
Anything else on the other side of that part? Why does it have such long leads? What does it measure?
Also need deck model number and/or schematic.
Also need deck model number and/or schematic.
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Inrush limiter, fuse, etc. Does not appear to be flameproof. Probably a 1/2W carbon film will be ok.
What's wrong with the old ones? Do they both still measure 0.22 Ohms?
What's wrong with the old ones? Do they both still measure 0.22 Ohms?
No they’re both open, I shorted the power supply with a temporary fuse I’d hooked up. Long story, I heard them fizzle away.
I put a 1/4 watt in just for very short term test and started smoking within mins
Thus there is a severe short circuit. Check diodes and lytics firstly.
Thanks Osvaldo, I’ll put on dim bulb with some 1/2 watt and then go from there. Cheers
Excellent. Keep us updated.
Edit: verify if there are tantalum capacitors of the yelow kind envelope. I had problems with them. If part of them became brown or black, immediately discard them and replace. They may catch on fire.
Edit: verify if there are tantalum capacitors of the yelow kind envelope. I had problems with them. If part of them became brown or black, immediately discard them and replace. They may catch on fire.
Look at the two 4700uF caps, the diodes, the pass transistors, the Zener diodes, and all resistors,
in the two regulator circuits. A problem in either one could blow both resistors at the same time.
in the two regulator circuits. A problem in either one could blow both resistors at the same time.
Thanks so much guys, I’ll be waiting on some 1/2 watt metal film resistors just to be safe. I’ll follow the suggestions above and check back in. Much appreciated
These are likely fusible resistors (they look similar to ones used by former employer in the audio business) and they did their job when a component failed, for continued safety they should be replaced something similar.
That’s what I initially thought, those being fuseable. Do you have any suggestions, those fuseable resistors are difficult to source. What’s your thoughts on a metal film alternative and would you have any idea on power handling?
Thank you. Yes I can do this, need a bit of guidance with rating of fuse please if possible
I estimate 1.5 to 2 times normal current drain. But once the main problem is solved.