various teardowns. dvd, receiver, and guitar amp.

Well, i figured it would be pretty stupid or worthless to make many smaller posts, when they can be combined as well.

As title says, i'll posts about two different cable receivers. I got them from a friend, as a fee from installing couple of shelves.
They don't have remote controls, neiter i have need for those in action, so no harm in disassembling them. Other is made my aston, while other is perhaps more popular, topfield. Quitar amplifer, that too i got for free from local ''online'' flea market. Its online because buying/selling and social encounters are made there between customers as well as feedback and so on. DVD player now then, was only thing i paid for, huge sum of 4€....But, now for teardowns and other discussion.

Cable receivers:
The aston model has exterior wall-wart, which keeps annoying whining noise, as well device itself. There is also pretty much ripple when wart is idle, but i didn't bother measuring it under load. It seems second-crade, it even feels like second-crade. At least it can be opened, don't know why thought, there 'aint anything serviceable inside. At least much....
Aston model lso don't have any buttons for operation, completely RC-dependent.
Connectors are basic, SCART, RCA, and other coaxial. But there is digital coaxial for digital sound O/P. And, rs-232, service purposes maybe? If you know, feel free to share! Insides are placed in one pcb only, saves at least space.
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The other cable receiver is topfield FT100C. This one even has some sort of screen on it, and buttons for operation.
Connectors are also plenty enought, even optctical audio o/p. When turned on, nothing is heard. But as seen from photos, it's alive.
I like the pcb fashion in topfield model more, PSU is smps
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DVD-burner:
This is lately my only find from local flea market. Everyone knows what dvd-burner is, so i don't bore you with that. I bought this just because it's cheap, considering possible adapter for usb/ide. First problem was the polarity of the power voltage. see, it wasn't marked....So i had to open it and make quick inspection. It was luckily standard-made, center ''hot''. Plugged it in, and it even works! nice find :).
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guitar amplifier:
Hehe, actually i'm not an guitar player, i just got this one free so why not :D. It seems to be basic a-class mono amplifier, 27w rating. time will show what i'll do with it, i'll test it tomorrow and decide it then.
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thanks for reading :)