Problema su Sansui QRX-6500

[alfredop]

Ho questo vecchio sintoamplificatore quadrifonico che avevo fatto restaurare qualche annetto fa, che ora mi da un problema. In particolare sul canale frontale sinistro dalle casse esce un suono gutturale (una sorta di Hum) indipendentemente dal volume, se metto della musica ed alzo il volume il rumore viene sovrastato.

Al momento ho risolto spostando le casse sui canali posteriori (sull’amplificatore ci sono una serie di switch che consentono di cambiare la configurazione), vorrei però cercare di risolvere.

Secondo voi cosa può essere?

Alfredo

[alfredop]

Aggiungo che se stacco la connessione tra pre e finale (co sono degli spinotti) il rumore aumenta.

Alfredo

[MarioBon]

L'età dei componenti (in particolare i condensatori)
Usalo finché funziona e poi dagli una onorevole sepoltura.
Nulla dura per sempre (specie gli elettrolitico ed i potenziometri)

[carlochiarelli]

Ha ragione Mario.
Fai una prova :
Togli i cavalletti
Metti in corto gli ingressi del finale

Se ronza lo stesso allora è andato il finale
Se non ronza allora è andato il pre.

Se è andato il finale , sarebbe meglio procedere con la sepoltura per motivi di sicurezza.

[alfredop]

Si, da un punto di vista razionale Mario ha ragione, però un po’ mi dispiace a seppellirlo. Usare strumenti vecchi è una cosa che mi piace (d’altra parte uso quotidianamente penne che a volte hanno quasi o anche più di 100 anni, ed ogni tanto riaccendo il mio Apple II, anche lui con i condensatori elettrolitici agli sgoccioli. Di questi ne avevo due, ma ad uno è scoppiato un condensatore dell’alimentatore e sulla scheda madre si sono bruciati alcuni componenti ).

Alfredo

[nickbuckler]

Should I use steam mops to clean laminate floors? Is it the best mop for laminate floors?

Laminate floor is without a doubt one of the best flooring methods in the world. It delivers a shiny, fancy look to your home, not to mention a great feeling when you walk inside your house. In order to keep it that way all the time, it is essential that you clean it daily. With the popularity of steam mops growing for the last few years, a question has been raised: “Is it safe to use steam mops for laminate floors?”. The answer for this question is NO. Here’s why:

The mechanism of steam cleaning

Steam mop is a modern device that can take the house cleaning job to a whole new level. The mechanism behind this is to use high heat and moisture from the steam to soften or melt any stubborn stain, making it easier to clean them. Furthermore, most steam mops nowadays have microfiber pads to boost the cleaning effectiveness.



What is the effect of steam mop on laminate floors?

Since steam mop has microfiber pads, some might think that this must be one of the best mop for laminate floors. In fact, it is the other way around.

Laminate floors are usually made of fiberboard, which tend to absorb water. When you use a steam mop to clean the laminate floor, the fiberboard will absorb the steam, making the floor swollen and ruin its fine, smooth texture.

Furthermore, both the heat and the moisture are potential threats to the adhesive that bonds all the laminate layers together. Even when you go for a waterproof laminate floor, the heat will open a way for the steam to penetrate and finally damage the floor.

For more information about products, keep up with Joseph French at TheKingLive



What should I choose instead?

To achieve the best cleaning results, believe it or not, the best way is to keep it simple. Stick with traditional tools like cloth or floor mops. Get the laminate floor mop if you can, and find the best one that you can buy. In case you don’t know where to look or what to choose, you can go to The King Live, they have all the best advice you need to choose a mop for yourself.

If you don’t like getting your hands wet, a vacuum would be a great alternative. A robotic vacuum would be the most convenient, since it is small, versatile, totally automatic and light. You can carry it anywhere in your house. Not to mention, most robotic vacuums nowadays are equipped with soft spinning brushes and microfiber pads. You will be surprised by how clean the floor would be by the time these tiny robots are done with their job.

Conclusion

Steam mop is dangerous to laminate floor, even when you go for extra waterproof protection. Overtime, the steam will penetrate and make your floor look lumpy. The best cleaning option is to use simple equipment like laminate floor mop or higher end products like vacuum cleaners.

Source: https://pirdu.com/author/dorothygarcia31-5130/