Faults on this particular set and never seen before in literally a hundred or more or these successfully repaired chassis:
1. Necked (down to air tube). A first for me on this Sansui SV2918 chassis. These chassis generally use genuine Thompson CRT’s. This chassis is kind to tubes.
This tube has had something happen to it. I want to know why. Only forensic investigation can reveal the truth. (I want to know why and how it got down to air).
It is now in a protected and safe area of our Workshop.
2. Wrong spares used. The SV2918 chassis uses a TDA8172 Vertical Deflection I.C.
This set had a CD 78040 I.C in place of the original. Not tightened to it’s
heatsink. Smacks of a bushie job. Heatsinks make no sense to Bush Mechanics…
3. The East/West is faulty too…Normally the ONLY Pincushion correction that goes wrong with these sets is the Bipolar Cap @ 4.7MF on the East/West…..
This set has more E/W problems than ever seen here before…There are diodes
that have burnt out, caps that have exploded on the E/W stage.
4. Sorted all above out…and Moderator/s please excuse me swearing…this has
really got to me…the SOUND is [MODNOTE]deleted swearing[/MODNOTE] too….what more has the fool that tried to fix this thing do…And no, not a power surge. Power supply is spot on and working properly. No lightning either if any of you are thinking it…..what was the idiot thinking that tried to repair this???
Sorry for the rant…
Outa here,
tvtech
1. Necked (down to air tube). A first for me on this Sansui SV2918 chassis. These chassis generally use genuine Thompson CRT’s. This chassis is kind to tubes.
This tube has had something happen to it. I want to know why. Only forensic investigation can reveal the truth. (I want to know why and how it got down to air).
It is now in a protected and safe area of our Workshop.
2. Wrong spares used. The SV2918 chassis uses a TDA8172 Vertical Deflection I.C.
This set had a CD 78040 I.C in place of the original. Not tightened to it’s
heatsink. Smacks of a bushie job. Heatsinks make no sense to Bush Mechanics…
3. The East/West is faulty too…Normally the ONLY Pincushion correction that goes wrong with these sets is the Bipolar Cap @ 4.7MF on the East/West…..
This set has more E/W problems than ever seen here before…There are diodes
that have burnt out, caps that have exploded on the E/W stage.
4. Sorted all above out…and Moderator/s please excuse me swearing…this has
really got to me…the SOUND is [MODNOTE]deleted swearing[/MODNOTE] too….what more has the fool that tried to fix this thing do…And no, not a power surge. Power supply is spot on and working properly. No lightning either if any of you are thinking it…..what was the idiot thinking that tried to repair this???
Sorry for the rant…
Outa here,
tvtech
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