Vintage SONY Digital Clock Radio ICF-C12W no audio

[UserXP]

Can be, but I am absolutely not convinced all 3 are bad at the same time unless a mouse pissed in it.

I took the radio back today and the guy replaced 5 electrolytic capacitors, two disc-like one, the IC01 circuit and a transistor. The capacitors he replaced had current problems. He explained to me that he attempted to tune the IF several times, but got different an incisistant readings and low volume, which finally narrowefmd down to these IF transformers. Also, he suggested that all three FM-involved Ts be replaced as there may have been corrosion inside or other process that may have damaged the tiny coil(s) inside or the ferrite core. Now, since I don't know the previous history of the radio, it actually may have been exposed to almost anything for all I know. The inside of the casing was mostly dusty when I first opened it, but there were areas like some brownish liquid got inside and got crusty, plus some of the electrolyte that had leaked under the 16V1000uF cap.
I'm glad if you find all this amusing, but I don't know anymore. It has been left for me to try and find these little transformers and give the repair a final shot, but I am running out of options here, guys. The only noticable improvement is that the radio secton works and that you guys solved the voltage problem. The volume is still bad.

So, please, if the printed markings on the three removed transformers, the brand and the top colour mean anything to you and you can tell their values out of it, I beg of you, do let me know. I have been trying really hard to save this radio, but the scrap box starts to feel ever so near. 😔

[Agent24]

Well you could always remove the can from the coils and visually inspect for damage to the wire. If a capacitor leaked onto them, I would expect maybe a break where the coil wire solders onto the former pins.

[UserXP]

I think I got the markings correctly and cross-referenced them with the codes in the service manual. Take a look and let me know if I got it right. Here are the full labels in the manual, the bold parts are numbers printed on the body of each respective transformer:
T1: 1-405-685-00
T3: 1-404-144-00
T4: 1-403-953-00

This still doesn't tell me their values and stuff, but maybe you will recognize the type of transformers and know an equivalent alternative.

[Agent24]

Honestly I would start by verifying if the coils are actually bad or not.
The ferrite cores should not fail unless exposed to very high temperatures, or are cracked, neither of which is likely to happen with the radio just sitting there.

The schematic shows the internal layout of the coils.
Since the pins aren't numbered in the schematic, you can work out which windings go to which pins by comparing the connections between each pin and the other components on the board. Will require a little circuit tracing but not too hard.

Then you can verify the coils for continuity on each winding.
If any are open circuit - check the windings where they connect to the pins - that's the most likely place they would probably break.
If a break were not obvious to stop from outside, you could carefully take the can off the coil and see if you can spot a break in the wire to confirm.

The internal capacitors do present an extra complication, they are not marked on the schematic as you say, but if you test for capacitance at the appropriate pins you should see something in the tens of pF, I believe.