this amp has a combo cab glued in LED tuner umbilically ribbon cabled to preamp pcb.
the chassis (tray) can not be removed unless this ribbon is detached, but it is not detachable on either of its ends.
you'd think, why would factory eliminate detachment?
well, if you read the schematic special notes, you'll discover the combo engineers are fanatic about shock-mounting electronic components alleviating solder breakage.
but that does not explain why there are all these other detachable junctions existing except for this ribbon anomaly?
the intent to remove chassis is to reseat all junctions, typical bmp's. this is esp necessary for the UK cliff switchable jacks inspection for contact functionality, very important.
after viewing this situation, the smartest thing to do is scissors the ribbon & install coupling junction at the scissored cut.
meanwhile i was able to invert this combo to slide the tray outward sufficiently to reseat all the spades & molex connectors inboard tray. i detached the rear jack panel to inspect the UK cliff switchable jacks, all tight fingers great.
after reassembly, i plugged in the guitar open ended cable to check channels, there are three, clean, distortion, hiGain. you can hear the channel honk when your finger touches the open ended hot tip.
i believe some of the potentiometers will have "burns" in their carbon tracks. this is based upon how much power each 1/4watt pot dissipates, as you well know, the clipping waveforms we are dealing with retain significant energies. as this is the artwork of over-sensationalizing the preamp guitar signal, knowing that the paper speaker must be driven with an emphatic particular waveshape to reproduce the desired frenzy of fuzz soft clipped waveforms signatured in tubes.
has anyone scissored this ribbon to gain tray removal from combo cab?
the chassis (tray) can not be removed unless this ribbon is detached, but it is not detachable on either of its ends.
you'd think, why would factory eliminate detachment?
well, if you read the schematic special notes, you'll discover the combo engineers are fanatic about shock-mounting electronic components alleviating solder breakage.
but that does not explain why there are all these other detachable junctions existing except for this ribbon anomaly?
the intent to remove chassis is to reseat all junctions, typical bmp's. this is esp necessary for the UK cliff switchable jacks inspection for contact functionality, very important.
after viewing this situation, the smartest thing to do is scissors the ribbon & install coupling junction at the scissored cut.
meanwhile i was able to invert this combo to slide the tray outward sufficiently to reseat all the spades & molex connectors inboard tray. i detached the rear jack panel to inspect the UK cliff switchable jacks, all tight fingers great.
after reassembly, i plugged in the guitar open ended cable to check channels, there are three, clean, distortion, hiGain. you can hear the channel honk when your finger touches the open ended hot tip.
i believe some of the potentiometers will have "burns" in their carbon tracks. this is based upon how much power each 1/4watt pot dissipates, as you well know, the clipping waveforms we are dealing with retain significant energies. as this is the artwork of over-sensationalizing the preamp guitar signal, knowing that the paper speaker must be driven with an emphatic particular waveshape to reproduce the desired frenzy of fuzz soft clipped waveforms signatured in tubes.
has anyone scissored this ribbon to gain tray removal from combo cab?
If you have helped the public on public help websites for household equipment etc you will find its now universal to make it difficult or impossible to repair a large range of equipment yourself unless you are prepared to spend nearly the cost of the product itself.
Many excuses are given --like-
cheaper to produce on a production line --
we no longer hold large amounts of spares---too costly --
not financially viable ( for the company ) due to its cheapness --
RAM glued into some laptops -excuse well they could fall out if dropped as well as many batteries .
and so on.
Take a broken bearing in a washing machine -gone are the days of replacing that yourself --its sealed into the drum ---and the cost of the drum ??--you guessed it --expensive .
How about printer ink -dearer than upmarket champagne and using third party ink ?--watch out for updates which stop you doing that.
Its a fact of life now .
Many excuses are given --like-
cheaper to produce on a production line --
we no longer hold large amounts of spares---too costly --
not financially viable ( for the company ) due to its cheapness --
RAM glued into some laptops -excuse well they could fall out if dropped as well as many batteries .
and so on.
Take a broken bearing in a washing machine -gone are the days of replacing that yourself --its sealed into the drum ---and the cost of the drum ??--you guessed it --expensive .
How about printer ink -dearer than upmarket champagne and using third party ink ?--watch out for updates which stop you doing that.
Its a fact of life now .