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Quad 34 Comprehensive Service


Quad 34 Comprehensive Service

Our UK  from 110.00 service includes: fault diagnosis, replacement of all out of tolerance components and a full performance test, PAT* and 12 hour soak test**.  

The top image below shows a typical full service that costs just 110.00. Even better, if you have both your 3O3/405  and 34 serviced at the same time the combined charge will be from 200.  On the majority of 34s & 3O3/405 systems we receive from the UK, this is the final cost + return carriage. In some isolated cases  where  expensive parts are required, such as transformers will be an additional charge. If this arises we will notify you before we commence the additional work.

The example shown opposite, although of the later grey case issue, has DIN sockets and the old style green painted PCB.

Some early serial no.34s we receive for service arrive in a very poor state. With the dreaded 'leaking capacitor' problem. Several decades ago a bad batch of 100uF 6V electrolytics were inadvertently fitted by the manufacturer. This particular capacitor brand contained a faulty electrolyte (a corrosive liquid similar to that found in some batteries). Over the years this nasty liquid  seeps out of each capacitor and onto the PCB motherboard causing track corrosion and shorting. In the early Quad 34s there are over twenty of these capacitors fitted.

In the worst case, several tracks will be rendered open circuit and the faults exhibited can be; no channel select, intermittent popping & banging, intermittent channel operation, no life, burning smell, the list goes on...

If we receive one of these unfortunate specimens we will appraise the extent of the damage FOC and send the owner a detailed report and service quotation. 

* 'PAT' = Portable Appliance electrical safety Test   

** 'Soak testing' involves monitoring the signal output from all inputs for several hours to locate intermittent or impending faults. 



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Last modified: Monday, 27. April 2015 12:57