Sparking noise from cassette recorder?
Hello first time!
This defect is a bit complicated to explain, but I'll do my best!
Let's say I haven't used the cassette tray for a few days. If I insert any cassette, a spark-like noise comes from the speakers, but nothing more. If I let the cassette play for a while, the sparking noise gradually subsides (after one or two minutes of playing time), and most of the recordings finally play.
The recordings aren't muffled, but rather completely choppy and interrupted by these sparking noises or silence. Apparently, the defect can sometimes be corrected by rewinding and rewinding, but these could also be random occurrences.
The device isn't dirty, nor are the cassettes, and dirt would just muffle the sound.
I cleaned a few cartridges with disinfectant a while ago. Could the disinfectant have settled on the read head and caused damage?
Disinfectant does not belong to it, as the name suggests. Bacteria do not matter to the recorder unless there are thick layers of biotope.
And the cassettes are not cleaned in such a way anyway, since the tape material can be damaged and the tape finally decomposes. Then there are lumps on the tape that cause the problem you described.
If you clean the recorder’s sound head carefully with iso alcohol.
If you perceive age phenomena on cassettes that are important to you, you should digitize these cassettes as soon as possible to save the recordings.