These parts cost pennies as compared to buying a new board or speaker - a 1000uf cap at 300V (buy name brands either American, German or Japanese - Sprague, F&T or Nichicon or Panasonic from MOUSER Electronics, Digikey or Newark).
#DEFINITIVE TECHNOLOGY BP 2004 HOW TO#
If reading much higher like 20 - 100 ohms cap is bad.Īll this assumes u have worked on electronics and know how to use a soldering iron correctly because if not u could do more damage. U can also test ESR set frequency to 100Khz for ESR testing - should read 0.1 - 0.3 ohms - any higher cap is suspect. Set meter for 120hz frequency and read cap - if it is off by more than 20% rated value it is suspect - more than 30% (1000uf cap measuring 1500 or higher or 500 uf or lower is bad - removing one side from the board and testing again will give a more precise reading just unsolder one leg - if more than 20% higher or lower then replace - but you are looking for a cap that is way off - that's the culprit) it should be changed. 1000uf is a typical filter cap value - and measure the cap with POWER OFF UNPLUGGED for at least 30 minutes - from wall outlet and disconnect speaker wire feeds short all the terminals and the electrical plug to discharge any caps that may be holding a charge to protect meter. If they open they ususally don't take any other components with them - with the right test equipment (I highly recommend the DER DE5000 LCR meter) - you can tell which are bad either by carefully looking at them (electrolytics sometimes swell up and pop on the tops or bottoms and leak a thick gooey liquid all over the circuit board - or you can use above mentioned LCR meter and test most of them in circuit using either the capacitance setting (look at cap rating printed on the barrel of cap e.g. Most times with any amp that is approaching 10 years or older - the power supply filter capacitors (Electrolytics) dry out and either open or short.
#DEFINITIVE TECHNOLOGY BP 2004 DRIVERS#
In my experience (I repair vintage & new Vacuum tube and Solid State amps - instrument and Hi-Fi - for last 22 years) any amp can be repaired - the problem being cost of repair vs what the amp is worth - I own Definitive Technology speakers (love them BTW) 2 x BP200TL, 1 x 3000 CLR, 2 x BP 2004 & 2 x BPX - 7 channels total - 5 of which have built in subwoofers (3 front and side surrounds) - I had a few drivers go bad, 1 subwoofer and an AMP board for sub that was DOA when purchased new.