[captainclock1988]

Hello everyone, about a couple of months ago I bought from a local flea market a Toshiba AM/FM transistor radio Model 8P-823F that I had to buy a parts radio to get it up and running with because the original circuit board inside the radio was destroyed by battery corrosion and also the FM Antenna was broken, and so I got the parts radio board installed in the case of the radio and the new antenna and battery cover installed and the radio was working pretty well except on FM where the middle of the dial (between 90 and 100 MHz was barely getting any stations in, but yet above 100MHz and below 90MHz the radio worked fine and so I attempted to see if I could realign the radio but when I did that I ended up making it worse and so I broke down and bought the Sam's for the radio and I'm attempting to do a realignment following the Sam's but I've already ran into some typos in the Sam's where some of the oscillator adjustments seem to have been given the wrong frequency in the service data, for the upper end of the AM Oscillator adjustment they gave a frequency of 1670 kC but the radio's upper end only maxes out at 1630 kC on the AM Band so I tried 1630 and I got the signal in loud and clear whereas when I tried 1670 I couldn't get anything in on the radio as far as the signal generator went, and then I'm trying the 1400 kC adjustment and I can't get the radio to pull in the 1400 kC signal from my signal generator, it will pull in all of the frequencies around 1400 kC but it won't pull in 1400 kC. I haven't even tried the 600 kC adjustment yet and I haven't even attempted the FM Alignment yet. Any ideas as to what I might be doing wrong or how I might go about trying to get this radio aligned properly?

See Pictures below.

Any Help with this would be appreciated.

P. S. this is apparently a very rare radio, because I've not seen very many of this radio out there, it actually took me several months of scouring ebay just to find the parts unit for this radio to get it going, and the fact that its only covered in Sam's and that's it kind of goes to show this wasn't a very common radio (and was probably very expensive in its day) its a rather unique looking radio as its actually half the size of most transistor radios of its time (it only measures about an 1" thick whereas most other radios like it were about 3 or 4 inches thick at the time, and on top of that its got 2 IF Stages for the AM and 3 IF Stages for the FM, an RF Section for the AM and FM, and the audio output is rated for a 1/4 watt which is really hot considering most radios at that time barely put out an 1/8th of a watt.

   
   

[radiorich]

Hello captainclock,
nice radio ! and yes it sounds like it could use a good alighment
Sincerely Richard

[captainclock1988]

Hello Rich, yes, it most definitly needs an alignment of some sort but as I mentioned this radio is being really weird and not wanting to realign properly, for instance as I mentioned in my initial post when aligning the AM Band, I was able to align the AM IF Correctly.

But then when it came to doing an oscillator/RF/antenna alignment, I couldn't get the radio to pick up the 1670 kHz, 1400 kHz or the 600 kHz signal from my signal generator at their respective spots on the dial.
If I just took and set the aforementioned spots on the tuning dial and then just did a "dial scan" on my signal generator then I would eventually hear those frequencies on the dial but the actual frequencies that were being put out by the signal generator that was being picked up by the radio at where the aforementioned frequencies were supposed to be was actually several tens of kilohertz off from what was actually being shown on the tuner dial, and what frequency was being sent out by the signal generator.

For example the Sam's says I need to use a signal of 1670 kHz fed into the radio with the tuner set at the highest end of the tuner dial (a little past the 160 mark on the tuner dial) but instead of the radio picking up the 1670 signal from the signal generator at that position, it would actually pick up the signal with the signal generator set closer to 1610-1630 kHz.
As for the 1400 kHz signal; instead of the radio picking up the signal from the signal generator being set at 1400 kHz, it actually picks up the signal generator's signal at that spot with the signal generator set closer to 1560 kHz.
Then finally, the radio when it's set at 600 kHz won't even pick up the signal generator at all, no matter where I attempted to try and set the signal generator at.

Also the radio's Oscillaor adjustment screws seem to like to short out the radio to the point that when I try to adjust them if I turn them a certain way the oscillator just dies, and the radio won't pick anything up (no static or anything) and I'm not sure why these oscillator adjustment screws are acting like this.