Bypauln91
Hello! How many ohms would the blue resistor have? 1.5? or 1.5k? And does it have the same properties as the brown one? Are both fuse resistors carbon film? I need help. I wanted to replace the blown blue one with the brown one, but it still doesn't work. The brown one has 1.5k ohms, 1/2W 5%… is this the same as the other one? Thanks
… the device's technical data sheet contains information about this fuse.
(No Ratings Yet)
Loading...Hey, I want to charge a battery and need to go from 5v 2.4A to 4.2V 1A, how big does the resistor need to be?
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If I see it correctly, the colors are red, red, gold, gold – that’s 2.2 ohms. The left resistance has the value 1.5 kilohm = 1500 ohms. That’s a big difference, and that’s why it doesn’t work.
You need a resistance with the same colors of blue resistance.
Okay many thanks, I’m stupid.😂
You lack some basics when reading circuit documents and circuit diagrams.
If resistors R with resistance values are specified in a short-writing, then
In the schematic (of the SONY TC-K570 Service Manual)
the fuse resistor R736 is specified with 1.5 ohms.
Also in the list is 1.5 ohms.
You have developed a blue resistance, the blue is 2.2 ohm (gold is factor 0.1). It is therefore not the original resistance, but 2.2 ohm is almost equivalent to the fuse resistance. I would say also 1 Ohm Or 1.5 Ohm (0.5W) is suitable as a replacement for R736.
First, check whether the operating voltage 12.2V (for the CAPTION engine) is present at all (which runs over the R736 to the engine).
This 12.2V comes from the power supply via the transistor Q808 and C815 (ELKO 4700uF/25V) and is stabilized. The ELKO C815 must be charged to 19.3V according to the circuit diagram. I would measure this 19.3V if they were missing, so the power supply is broken. Further fuse resistors (R825, R822, R823)/mirror diodes in the power supply…
PS:
Perhaps the CAPTION engine is a bit tight (moisture, totally dry plain bearing, long service life) or is jammed and has shot the R736.
Good luck!