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I have been meaning to tune-up my two TFM-22 amps for some years now. What did you do? Replace all the electrolytic capacitors with new of about the same value?
Thanks Charlie, I didn't even know about that forum.
I am a newby here, just joined a few min ago..I have 2 500T amps that I am about to send out to be upgraded..haven't used them in 15 years, but loved the way they USED to sound..have the c-2 and the tuner as well..what kind of speakers do u run with your carver amps?I have an old set of VMPS towers.Thanx for all the good reading
Hi Speedskater, The link below is a complete write-up with parts lists and photos to recap a TFM-25. You may need to join the CarverSite to view it. Members can also download Carver Owner Service Manuals there at no charge. I did confirm that the TFM-22 and TFM-25 were issued the same Service Bulletin; which is a reliability upgrade that involves changing out some resistors and transistors to prevent overheating and discoloration on certain areas of the main PC board. All of the caps shown in my parts list will be common to both the TFM-22 and TFM-25 except possibly C401-402, C405-406, C409-410, C411-414, C415-416 and C451, which are on the meter drive board (different meters used). http://thecarversite.com/yetanotherforum/default.aspx?g=posts&t=1683have a great day! Charlie
TFM-25 RECAP PARTS LIST: Carver # Qty Desc. Manufacturer # Digikey # Spacing TFM-25 Component Price 76R3TW221M-RT 2 220µF 6.3v UPW0J221MED 493-1699-ND 2.5 C109-C110 $0.36 $0.72 NS-50TW 4R7M 5 4.7µF 50v EEU-EB1H4R7S P13465-ND 2 C205-C206, C409-C410 $0.11 $0.55 NS100TW 1R0M 4 1µF 100v UPW2A010MDD 493-1962-ND 2 C211-C214 $0.33 $1.32 NS-25TW 470M 8 47µF 25v EEU-EB1E470 P12123-ND 2 C307-C308, C415-C416 $0.16 $1.28 NS-25TW 220M 1 22µF 25v UPW1E220MDD 493-1811-ND 2 C309 $0.32 $0.32 NS-25TW 330M 1 33µF 25v UPW1E330MDD 493-1814-ND 2 C310 $0.32 $0.32 NS-50TW R47M 1 .47µF 50v UPW1HR47MDD 493-1885-ND 2 C311 $0.34 $0.34 NS-16TW 220M 4 22µF 16v UPW1C220MDD 493-1769-ND 2 C401-C402, C405-C406 $0.34 $1.36 NS-16TW 101M 4 100µf 16v UTT1C101MDD 493-3271-ND C411-C414 $0.47 $1.88 NS-25TW 100M 1 10µF 25v UPW1E100MDD 493-1809-ND 2 C451 $0.34 $0.34 BC00103NN60GH 2 10000µF 100v ECE-T2AP103EA P10038-ND 22.5 C501-C502 $11.96 $23.92 BC63332N240HC 2 3300µF 63v ECO-S1JA332BA P7481-ND 10 C503-C504 $4.79 $9.58 BC35682M240HC 2 6800µF 35 v ECO-S1VA682BA P6660-ND 10 C505-C506 $4.11 $8.22 NS-35TW 471M-KF 1 470µF 35v UHE1V471MPD 493-1582-ND 5 C509 $0.66 $0.66 NS-50TW1R0M 1 1µF 50v UPW1H010MDD 493-1886-ND 2 C510 $0.30 $0.30 Total $51.11 TFM-25-2 SERVICE BULLETIN PARTS LIST 1 of 2 - RESISTORS: Carver # Qty Description Digikey # TFM-25 Comp. Price Total REPLACED 2 (buy 5) 62Ω, 1/2 W Carbon 62H-ND R209-R212 $0.058 $0.29 REPLACED 2 1.5KΩ, 1/4W Carbon CF1/41.5KJRCT-ND R229-R230 $0.08 $0.16 REPLACED 2 22Ω, 1/2W Carbon CF1/222JRCT-ND R243-R244 $0.14 $0.28 REPLACED 2 (buy 5) 27Ω, 1/2W Carbon 27H-ND R245-R246 $0.058 $0.29 Note: Verify R235-R238 are 27Ω, 1/2 watt resistors-- if not, add these to order. Total $1.02 TFM-25-2 SERVICE BULLETIN BULLETIN PARTS LIST 2 of 2 - TRANSISTORS: Carver Number Qty Description B&D Enterprises # TFM-25 Component Cost Total 2SA1370-E,F 4 Sanyo 2SA1370 Q201-Q202, Q209-Q210 $0.53 $1.06 2SC3467-E,F 4 Sanyo 2SC3467 Q203-Q204, Q207-Q208 $0.39 $0.78 *Total $1.84 * Minimum Order amount is $15
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