Electronics > Repair

[SOLVED] Tektronix 7000B series upgrade difference D845 vs D865 - TVIA 5202G

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charlyd:
today i also discovered that my poweron flex pcb is broken  |O  so now i am searching for a replacment from a part unit is somebody has a bargain.

feedback.loop:
Perhaps, you might design a replacement yourself. PCBWay can make flexible PCBs.

charlyd:
Hi yes i will manage the flex pcb.... but in the meanwhile i came for the 1000x on the magic CSA7404 thread and found this..

https://www.eevblog.com/forum/testgear/tek-csa7404-repair-project/275/#msg1244283

so there are TDS7154B scope with the newer D865 board installed and even booting. 

Who with a TDS7154B scope want to drop in this topic for more info.

curious to response

Jwalling:

--- Quote from: charlyd on July 05, 2022, 10:20:44 am ---today i also discovered that my poweron flex pcb is broken  |O  so now i am searching for a replacment from a part unit is somebody has a bargain.

--- End quote ---

This guy has made a replacement.
https://www.ebay.com/itm/233946969757?

charlyd:
Thanks Jay, the membrane as the seller calls them already arrived.

great tip Jay, because he sells them new so no pre-bendings  :-+

so that is fixed too.  back too the TDS7154B with the (upgraded)  D865 board like i saw in denimdragons unit... Who can clear this up? do my D865 boards both need a recap job, what i don t believe caps are no bulgie. I guess  boards are from later version. so despite they are booting great (with pci card installed?) my display in the scope don t lite up when unit is powered on. As my boards don t start native on the bench |O

i hope somebody jumps in the topic to say i recognize this behaviour from powering on D865 boards native on the bench, and this is why......

greetz charly

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