March 13, 2017
About two years ago I bought a nice sounding Roland VK-7. The keyboard was in nice shape – however, it did develop (or had previously) a few flaws during the last year. The first problem (which I also informed of by the previous owner) was a random reset of the whole keyboard. After googling about similar problems other VK-7 owners had,…
March 2, 2017
Dejan and I have finally managed to perform one last attempt to fix the Hammond XB-2. As said in my previous blog post, the XB-2 I bought had an interesting distorted sound problem. This is a video of the sound problem: We tried a number of things, including the DRAM swap. Today, we performed the SRAM swap. Since we were not able to obtain…
November 29, 2016
A few weeks ago Dejan and I began our work on Hammond XB-2 again. The current problem can be heard here: We tracked the problem back to the static RAMs, which was also mentioned as a solution in one of the comments on this similar youtube video. We opened the keyboard and took out the main board. As you can…
June 22, 2014
Z Dejanom sva uspela identificirati še zadnji problem nedelovanja in šumenja orgel. Tokrat je bil problem v slabih kontaktih na ploščici, kjer se nahaja oscilator, kar je posledično vplivalo na več ali manj ves output. Najin zadnji podvig bo reševanje ene in edine nedelujoče tipke. Sama tipka niti ne moti, če je bas del vklopljen (v tem primeru se zvok…
June 12, 2014
Z Dejanom sva ta teden nadaljevala s popravilom. Glavni problemi so bili z napajanjem, ker je stvar bila po domače popravljena. Par žic se je dotikalo, nekateri elementi so bili nepovezani … Element 7815 (napetostni regulator +15V – spodnji od obeh elementov na hladilniku) je imel feature delovanja brez srednjega (ground) pina. Včeraj sva pričela z menjavo kondenzatorjev na bass sekciji…
June 5, 2014
Po krajšem brskanju po bolhi sem našel Crumar T1 organiser. Zadeva je v precej slabem stanju – potrebno bo nadgradit napajalni del (tukaj je nekdo že nekaj čaral glede na iskrine komponente), prav tako hecajo določeni registri v kombinaciji s tipkami. Bas del bo potrebno v celoti pregledat, ker je nedelujoč. Ampak je pa prvi Hammond klon, ki ga imam 🙂 Še…