So I pulled out a resistor reading as orange, orange, brown, gold which to my understanding is 300ohm. The color of the resistor was darkish looking. Seemed like the odd one out. After taking it out it read as 220ohms.
I put a new one which read as 229ohms
The tuner was able to run longer than usual. Also spotted another resistor looking darkish faded and that's running hot too. However, I am not able to find a replacement in terms of the same value from my other junk radio sets circuit boards.
It reads as brown grey brown gold. As far as I know it's an 180ohms resistor. Does any one know a substitute for this one I can use?
Edit : so I put in a 220ohm resistor as a substitute. The tuner was running well for just 5 mins until it started switching between AM and FM continously, with no music playing.
I put the old one back. It reads as 171.00 on the multi meter. I am guessing thats supposed to read 180ohms.
I also added a 21 ohms resistor connected parallel to the faulty old one which I added back. So it's now a total of 192ohms. The unit did start switching between AM and FM after some time.
I am having a hard time trying identify the color codes on the faulty one as I got no service manual to double check and th w faulty one is dark and the colors look confusing.
Does the value of this particular resistor need to be exact? If any one has this service manual, the number on the board is R709. I am looking at identifying what is the exact value of the resistor on there.