• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Project: Fisher CA-880

Super Noob

Super Noob

Super Member
Had an opportunity to pickup a CA-880 unit for reasonable $s since one channel was not working. It utilizes a STK-0080s and is a great candidate for the RCS16 collaboration project pack upgrade. The large studio fisher (sanyo) gear from the early 80s has some impressive transformers and quality involved = but has STK packs which most know will eventual give out. If you have done recaps and restores, I encourage those to consider picking up one of these non-workers.

This thread will document addressing the one shortcoming of this integrated = STK packs.
@rcs16

Lets call this = bullet proofing an under appreciated amp.

giphy.gif


I didn't get a good picture prior to start.... let's use HIFIEngine stock.

fisher_ca-880.jpg


My unit has that sweet anodized black aluminum faceplate & some decent size meters.
 
Last edited:
Register to hide this ad
Power Amp Board (Right / Left) 131 0 4001 07210 & 7220 (note double QTY - one for each board)
C01 Electro LL 10uF 25v UKL1E100MDD Nichicon 10uF 25v
C02 Electro LL 10uF 25v UKL1E100MDD Nichicon 10uF 25v
C05 Electro 10uF 35v (found 50v) UPW1H100MDD Nichicon 10uF 50v
C06 Electro 10uF 35v (found 50v) UPW1H100MDD Nichicon 10uF 50v
C07 Electro 100uF 63v UPW1J101MPD Nichicon 100uF 63v
C08 Electro 100uF 63v UPW1J101MPD Nichicon 100uF 63v
C09 Electro 100uF 63v UPW1J101MPD Nichicon 100uF 63v
C10 Electro 100uF 63v UPW1J101MPD Nichicon 100uF 63v
C13 Electro 100uF 10v UPW1C101MED Nichicon 100uF 16v
C14 Electro 100uF 10v UPW1C101MED Nichicon 100uF 16v
C19 Electro 4.7uF 63v UPW1J4R7MDD Nichicon 4.7uF 63v
C20 Electro 4.7uF 63v UPW1J4R7MDD Nichicon 4.7uF 63v
C21 Electro 4.7uF 63v UPW1J4R7MDD Nichicon 4.7uF 63v
C22 Electro 4.7uF 63v UPW1J4R7MDD Nichicon 4.7uF 63v
C10 to GRD Electro 1uF 63v R820C4100DQ60J Kemit (Film) 1uF 63v

Q03 /Q04 2SA979 (typo on left board scat) KSA992FB two gain matched pairs
Q05/Q06 2SC1570 KSC1815YTA
Q07/Q08 2SC1708 kSC1845F
Q09/Q10 2SC2441 KSC2690AYS
Q11/Q12 2SA1047 KSA1220AYS

AM-JKLUm3kndSQFdxKV3iae9EELkCz4foAggwtuQV2-wcbT43iRlHgPe_QRajL2JBM1Tqrt47_15Rmyy3B_9C-Pt9KFk_ZVcAtM_rm2-zHqQpvDuV8Mt9dnxucc0PBujYoc0p4MhwEW2RJ8-lNSGj9UtLGe1=w330-h615-no


AM-JKLV_Uv_7B007hvr1AUNfwsuX9UiuiQyizYVr_FBGtKN-nNgQqVyqTYr1oR7W0fKo6Za9njzuwJm0qiijwWwPB7FYnzixs-aXE13G22z3Bb6ZfNPvxgoJevXP7X7Kf8fAnKOQqiTdVw8U4V4WRCGW9gZY=w751-h546-no

AM-JKLVyGbqN6EMU4E2TEGn0XiZ-Ava3abC3DvCq1_92Ay8CYQ_BTDvmDMZKJn2ZF1D7k1bCuoQgejdNAObFah6n1P3IFKzeivjavC2KS-akM4JiGjQt7d--i11M0jRHT7PymfnjjT5NwlDwINqnc-Uef0K2=w666-h517-no


AM-JKLVybOUucKBJxyuZS8v_BVdiXUIVX69DXaUJy5taQqwxeExTbsrSh1NEXZGtjB864Yx_f7hATF__ROp1oB2sYU7yK1QnP5AQ_IrTXnTNvdTWnLXs4S9dSlDhebbu2wiKeQ341P0E0rEPE7_vFjMwI7hc=w611-h539-no



Some Before Pics...
AM-JKLXf6yv7_-pArwM0ZYFXpuAyC10zGLreMikZw1XYJG-ag6RF-mEZB8d_spOwDOKPx502xDSfo7lf6qCuMDLFZ0XgBQ_luz2NQVseGoGMhOFATID_7fnpffa6FcGTF86dl8Lw6YC2hCM81pEyUs_OrWgP=w462-h615-no

AM-JKLVcrpz0SWuURIXyfm0GJcj24jVp3zvx8rKbzBpp1zyE2A7VQ2JVbf8HTOLN1kXxQ0uVVpnLHJNoMQTU76Lf5-YbAd8knLfBir4MDVMmcrp03MIaWax8NyTNp9okDjvzRR9y5ys4S_s3pApC50KVuIp1=w820-h615-no


After:
AM-JKLW8j2PVAQP3Ea9uuphUBxCS7d1XfOX4QODAY3E7n5aZIek4UnIcnOhKMzFWFx93ZRLQ_9mzytRlh0bp9eIPG11_sxm9r0w4nrhaZ3I8vRULuv2bfPhg0e-sFTqaSH8w-10Jj8Vsy5uuoWcio1BvTtN3=w462-h615-no

AM-JKLURYSxm_tUIgjl6GH2XFLf6seZSrAx4WOR8eOv5CF4D6HMzD3QTv9n7UpX5zNd5RYD3wFCIrvYVgmtqIum4eEgHStDH-21KYmye3-8xqcT3DChViQyfLCPadGpRNT0yd7H6D4F1z-PSMtcJQ6vxhlaC=w462-h615-no

AM-JKLWRFM2-fp_iv3r3ifiBMjhZWgM29KW-i-o0M-Y3OCQlAu_1kXLMHMXRuqVmsipp_dOobKbQfQVobWPtp0MUye2A5e2J6YsI8ukaaV1bC689LwGh0edpj9VWorW6zKAKbtesHFXYH2_N7Ub0EwWOu_mU=w820-h615-no


AM-JKLU8vVKDMFbrMAB8Z9z1BKutH0VPR2_CU9yKJQbT11udgkY0fmo9h9KpKEcRivF7Qo6hiGfrzrAuTtJy68Eodf8Zo9nogOmRs-iZroxgnPareV2VxuR_ZAFprfEOqwaa8j3yNkFY2pNw7GdfR5Ir1By5=w462-h615-no


AM-JKLV8dnKjQQH9Alr7qYjMWA6hyAeBg7zx-0Mza6Jq0dwMGWpLaCkWevA9rBLhOclsfbu5rizm3oFtTp7QsHtYSOcb557vyE7uJAKSYaucKIPOGuaX_6R_5JYr51o2pU1_bt7-V-PHFzSIZNSxo6eeef2-=w462-h615-no


The offset was between 80 - 90 mV in each channel... I elected to update the the input pair and driver transistors, and DC offset is now roughly 40mV and 50mV. Nice improvement.
 
Pre Amp PC Board (1310-4001-07230)
C01 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C02 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C05 Electro 100uF 10v UPW1C101MED Nichicon 100uF 16v
C06 Electro 100uF 10v UPW1C101MED Nichicon 100uF 16v
AM-JKLXu02PEzWbQwhxmltuthB2RQ-zV6UeqtOLJFZoA-WNofL8Xe579QZWdYhSN-PexCpvQK0SfsL34jeuiJ2CAjFrwUirQ2PjvPnsCvKDlrtkJvo5SE7vxMlzO4BALEd4qvRhGIz0yo10daq1T7qOON1CR=w338-h147-no


AM-JKLUbgPkXcDMYN82M6z80cJYNpaAkFqyt9d3MfRuv53WO5uUeNxRcY_k8dtP_pBls_VWhTVeahTa0OPf7zZ0UI0b_bNLqGJOyUGrZD3amDcNjM61VaSLTfKOLDoM6mSsaDxlQdwrM_EWATNMHrpPAquK2=w274-h437-no

AM-JKLVt9I8TyG2zlHYMiVDdE7GSb5T2-PC4HKXnymY_x0zxFhlwknyHW9Zyf--zpCj_BtYyFE0RDGY9WW21e5S1F4NeFbyN0c9kAhU3eSwN2Sc8NXoNYu2gxaI3vBntRYuKnyKW51h6I8ECPLEEkT9yhK8S=w307-h384-no

AM-JKLX1zipoKI3s6D12r0nll8ks420g5a858J5gWCZvBi1TbomhWN8V_bcPlfek7uMXvpP2fyBbbedSX2ZEU0sQKI-TkbDSCWdZp4j8HOPQ_TAKTmmBCJQuseF1jUM_GUatpaJXZgh21QJHECY8-MQv9OKz=w462-h615-no

AM-JKLUt-_vCAQhLvefhgVBUPyByva45M_IVgfKgOZmk0FQ4_AQcF3Q9ayCY6NRnGaWz61EAEw43zupCZfu8j2HbhjLbPif92hbbohc77MmbBgLMM448Pv07rLV2rcwIhLj_4kuJpZGHXLlR0HAGhN29oMlh=w462-h615-no
 
Tone-Pre Amp
C01 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C02 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C03 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C04 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C05 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C06 Electro LL 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C11 Electro 100uF 6.3v UPW1C101MED Nichicon 100uF 16v
C12 Electro 100uF 6.3v UPW1C101MED Nichicon 100uF 16v
C13 Electro 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C14 Electro 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C15 Electro 47uF 16v UHE1E470MDD Nichicon 47uF 25v
C16 Electro 47uF 16v UHE1E470MDD Nichicon 47uF 25v
C21 Electro 10uF 50v UPW1J100MDD Nichicon 10uF 63v
C22 Electro 10uF 50v UPW1J100MDD Nichicon 10uF 63v
C23 Electro 10uF 50v UPW1J100MDD Nichicon 10uF 63v
C24 Electro 10uF 50v UPW1J100MDD Nichicon 10uF 63v
C29 Electro 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C32 Electro 100uF 6.3v UPW1C101MED Nichicon 100uF 16v
C34 Electro 10uF 25v UPW1V100MDD Nichicon 10uF 35v
C35 Electro 10uF 25v UPW1V100MDD Nichicon 10uF 35v
C35 Electro 10uF 25v UPW1V100MDD Nichicon 10uF 35v
C36 Electro 4.7uF 25v UPW1H4R7MDD1TA Nichicon 4.7uF 50v
C38 Electro 4.7uF 25v UPW1H4R7MDD1TA Nichicon 4.7uF 50v
C39 Electro 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v

AM-JKLVajgFmZAO5wWfPpMXwpoQy4XLJKeMesjVVtonqaIUpIxy9TNEOtjJ8cz_AOpzVUUkpJkoCe-ovxeip1jGJRHpGx-xPOGY1yJYE0bp6BoXCMSoxPqrWXDZUHo2Ev-rgGflycgC0vJnL_GvaBj_V3Ytr=w361-h409-no

AM-JKLVwcc6QaY7esR_tbAal2lGDy6hmdTf2WGZFnRpdx1DLYDc1cfGVicy_eiKgxFHOVryguyTwsGTjQKCGA8z7JOE2jJPM663cJJ6d5BShS-NO7uhNtufnWMlUxV-6Qu1MFPkR8khyiYSQl4VRDIl3wAly=w1284-h570-no


AM-JKLVrfC2ELHMCLgubCTuE-b0umDE1T_llIchdOVxZGZUKyidsOFfNeJSjrQrJ-r1MJFyZgtbwZnucWcDk9tJfe9ROrttX1qljNCjlkx2Vr80F6lodAQpX-PkBnNZUcBVHtEwsDmdk98TvfVEPot64_LH0=w462-h615-no

AM-JKLWW-8S4P9B5Ww-kXiJ-NTlNZMGRgwMC-qYathE6e7ueGAPdpAK6Uod6eU9mduCCkLdoAPMkyAiLhJgc2MJKy38spTbhcm5AIDhfv1JU9FqtPmgXfP9SCafBrwKhZSyPmXAbiRNGj8HU6hsuItoPzJdf=w462-h615-no

AM-JKLW6ZSEufSMhQmcKTevrpCN0X5Mkayx1u9kxCzcf5IC2HuFdkT_hSk_TNOB58K7ietcc2YrkZZWcf4PK91zgZHUY7vzxpBwBt7SKoTOk59g61Vko6nZtoVoDWXU_ighF7tWr8vnP0bofIRnBA_LUWuij=w462-h615-no

AM-JKLXQQNVZOYavD6y-3AZ0bw2VQkqkhwFOHjGEXpXqd3oU_btamN1kMKOUH4OY76VUR2DqXQUZwvYwNj2hf6a2-pwJSTjZyMUi8F57uJAfdfWBwE3XJqhkER50m9KVDbXKh0079ZwJwEYbk7zAaPOYVnD5=w462-h615-no

AM-JKLVfduar50rTewfLNo3qmY1SGJZLuw7Frb3l9Jk0zoCj7tDZmpbKWPBiK2UiYWjbj6xqYUuqu6SNMsYRwd-xtNQ6rjNyZzM0RC6GSDgDC58VxT4p8631m5m_kuLGPDZ7q7fzQJ7Ffkezx6P49aPGtAKy=w462-h615-no

AM-JKLVnQIjCuJIn94cE5UrWWlUgKqUsLCj2UeS0vj4jyFlDs1dlNo8BuFfCz3K12JUrxNVKTRjCvkf2x5M1ReRPdpumNhblOdsKWeRLf7P8zLkqTout7zHY5xoTN6Qgd4s1YM8vzeYg-GQuRvDDV_oLgXHd=w462-h615-no

AM-JKLW-3U1VdvHjJBSZwOEulKIV8L0kMpEMusx4QVb1RMDUU3JzIivVn8yPmat2PVt3SsY4l6To5bQGa8mM4_pb4oQhkAXP-2_kWTm4xVUeIGSuIyETefBK5EA2iC3bSnQwZAJeE4_MDxBe06C28z4ha8X0=w462-h615-no
 
Input EQ Board (1310-4001-04113)
C01 Electro LL 4.7uf 25v UES1V4R7MDM1TD Nichicon 4.7uf 35v
C02 Electro LL 4.7uf 25v UES1V4R7MDM1TD Nichicon 4.7uf 35v
C03 Electro 47uF 10v UPW1C470MDD Nichicon 47uF 16v
C04 Electro 47uF 10v UPW1C470MDD Nichicon 47uF 16v
C09 Electro LL .22uF 50v MKP4F032204BJSSD WIMA .22uF 250v
C10 Electro LL .22uF 50v MKP4F032204BJSSD WIMA .22uF 250v
AM-JKLWU8i957tTT4wR7lTeV4QpbhpKM9dVvBr9InPSlHbssjSl70V5OtvYTl74St0aTGgiRTHAgoZGZT7C8q5-S8CoL0SMrSE7jgWI1e2Hy775PeILqQGXRGNgkZuh6r8SeEdF5qziEY2Vzy4eM46HjNXQo=w402-h132-no


AM-JKLXZcsS7xcukQs0QGdhXORHtS8GnRcVJghUgRMAElBSVkXP_eqQ5OAZlrTyTfXA3IQAe7n46IzCDjtdYylKb7kJm2F9NzkFlhkFUsWpEBfBveO0lQ6HXYQ-8cBLTCPmYPzbCVrq7gyNLejTasKI_rgbi=w738-h432-no

AM-JKLU72zmYepXa6-vcj-o7fiRwfNec5MKudOrOWTg_KvcO10hceKRT3dMoy3d4qi6HKEMvWXYw7nywTjUvm1tUG5IgNmBGIolekWPKNaEE898s5QMjeJJhhvWtBCx5ARNoQpzuevInIma4fSwjrIfFkNn7=w648-h405-no


AM-JKLW3GaHwG0toOxZ3JffiQN8bhzQb6IjAf3t3PXGFWKuwSAwWrRmGNDBLZtMEKyWgFgWlZQyeEarmcsmTDwW2_Ehp5gw4Jr0RGB9p6-clBmT9Gq1_RHnYkMBXknuCj0xxj1P-pZdVDC9R31cYHh1EI-7Q=w462-h615-no

AM-JKLWUT2E1PJ9mI6WDP6Asv_jEnqjGmrmuc5-RXaDjGwU2wKtA996cjkEUa25Dv5qHyAVlLstNJhoK5GHj2naJFh7OqGIZKPj8AJJ7FxWFlVvAXREo4VNDzXMW_bGFf4a0Wj1vnW91DQYHdnJ-Cwq1ZU4X=w462-h615-no

AM-JKLXaAxWrRYUKQXI_LZoaU334v4W6wYepIFx3AZd8OCp-7b2I4Z0YFGM5emMggmG4nhiZfe5alyvP2lks6-jWQ_3S0dBqzZ5roqxRPRbdbI4Bm75BOXkYhWhcetih7dpnQOUv81ONivLH0AXzOHSjG0ft=w462-h615-no
 
Power Supply (1310-4001-07200)
C05 Electro 6800uF 80v ESMH800VSN822MA45S United Chemi-Con 8200uF 80v
C06 Electro 6800uF 80v ESMH800VSN822MA45S United Chemi-Con 8200uF 80v
C07 Electro 10uF 35v UPW1H100MDD Nichicon (UPW) 10uF 50v
C08 Electro 10uF 35v UPW1H100MDD Nichicon (UPW) 10uF 50v
C09 Electro 1000uF 25v UPW1E102MHD Nichicon (UPW) 1000uF 25v
C10 Electro 1000uF 25v UPW1E102MHD Nichicon (UPW) 1000uF 25v
C11 Electro 10uF 35v UPW1H100MDD Nichicon (UPW) 10uF 50v
C12 Electro 470uF 35v UPW1H471MHD Nichicon (UPW) 470uf 50v
C13 Electro 1uF 63v R820C4100DQ60J Kemet (Film) 1uF 63v
C14 Electro 100uF 16v UPW1C101MED Nichicon (UPW) 100uF 16v
C15 Electro 220uF 16v UPW1C221MPD Nichicon (UPW) 220uF 16v

AM-JKLW9HDsjKW0S236pkTcvPgaSDHjSzI8qSzWCEQtxM5Dj_I2Ywe8UwN8Z-S2z_ZHXgEPEfn62zX3hY2uAoMV4HNp0EKxrqnvPcD9u7ZWfC_-D1lZf84v0ZJkCSOcNzZVNZ5dYMfaY1y0nGfiYhLwx04td=w432-h165-no


AM-JKLVK92h3RpO7ONIlJT_pHrIh8srtoSy8QlzmLNylb6385jEWZv9HXTKhmiRU-UPExxEEfQ8NErHVRTn4zxmhxJmu32PO-lMr_Xhl7D_kEN_QEhKOTZGmJ8geLybXw0PQXL7Cvt-btyx6Vff1IMy4eato=w628-h473-no

AM-JKLWDbWLB2C8bGo9jAAuvL3C-u4PKpMqllmUUHGWvE_w0aEtm6kp9o5dHdEoZibF-GQYXYzdbgCDADTBS8HTELumzCcFyxawHgOThAQA9Egr22OX3xgK9eIx5qm8tn6UWneXNyVdaQXiMJq3TGuBQOrRd=w772-h473-no

AM-JKLUDitTjI9nJp5dzkmjCKxMH3_U3gJfz_4FtyCsE0brnVRI27oTGxDzMPWpCv_x2_n25U67tsn08VBYhm_lLx_q4VXC9FmkE4v33SX6fRiJoxyJC_JWykQax2yJR2v4rxSSvsB3LrBpewSnlHZ6kn5Ty=w462-h615-no

AM-JKLXIayZM7JD4I5Db93q41lwd2vyuMsuv8mP8JvwySRZgZYOmu7yJHRahrz_TcxDxhECwYpnffaugzEtreC2-EA39fs0Wk8Oruj2_i3X-tgQe8_TbMEQqtqN_Ft8O97MYo6DUwF_CbcRA0UspczZaz3og=w462-h615-no

AM-JKLXQFq7K1_Vsei0Ihm-56dhm67Z2E3V70AUYce0e6pcSPX5k34H1m_rbEPNazFwQHnaiPmZsZWSbKXYjHeeV7ps9xfc59RqT2oPVuRZlvgCnHpXtTe0fJHhekTHeDDOVayxVhFilpGEfSzEBfgWkpIQv=w462-h615-no

AM-JKLVNdgqoP7pLs0ubG2Ivaj3Nuj_cHMbigr1Iy1OwGTjWhQPLD45d-tyQxO_xUZZfaRTQ7BuwCmfbzZ2EQ_lAK5ojCQB11GC_YbtztUKgHMQuI4czJqbiiiKJJMq49swLMxt6X5QgiAmTwdmxtM4mGVdt=w462-h615-no

AM-JKLWWeCAZAJzFzjXv6TM9ySAQp5Z6uM8WK9vNA3FX6FGDUbvx-505bZeG7BoJq-Aqsog-fuJZIEkVhfFn_NzPEF3FERWuFPtXjUhAkBjbPVSAJAlMYYXGHTJ9xYdo2TMbKAujzyinVFdSamL4f94sG8au=w462-h615-no
 
I have one of these coming- just bought it today. This post is going to be super helpful! How was building the STK replacement boards? What LEDs did you use? Looks great!
 
https://www.amazon.com/dp/B08RMWL6W...abc_TFWWEJG9FKA1A7Z1CJDY?_encoding=UTF8&psc=1

I like to use these for typical dial lights and large indicators.

I keep a pile of 3mm and 5mm white LEDs that come with resistors and I make custom for each install. They typical come with 380 to 470 ohm dropping resistors, and I will adjust resistors depending on the supply voltage to ensure correct brightness. Also like to scuff these and flat top to reduce spot lighting.

It’s just some trail and error…. wish I could of been more helpful, but pretty sure just used standard resistors on the non meter lights.

Have done the RCS packs before on a RS-2010, so they are very straight forward for me after I get the plates built…. about a 10 million post thread on these packs if you knife and fork around on the google machine.
 
I got mine in the other day- I eBayed a CA 800 for $140 including shipping with a channel not working. The seller contacted me and said her husband installed a fuse and both channels were working (after I paid), so they canceled my order (after asking me to pay more)---LAME! anyways, there was another seller that had a CA 880, looked in good shape, said it was quiet in both channels. It was like $130 including shipping so I got that--- I'm listening to it now. It showed up, near mint, both channels seem to be working fine (and it gets loud)- just the lights are out. So, I figure I'm going to go ahead and re- cap it and add some LED's. Scuffing the LED is a good tip. I have used them in some stuff, and they don't disperse the light well. I have some vellum paper from a Marantz I have been thinking of adding with LED's. Thanks for all the information-
 
Hi,great job with Fisher CA 880, congratulations!
I would like to replace the final STK circuits in a Fisher BA 3000 amplifier, they are STK 0070 II. Is it possible to replace them as in the Fisher CA 880?The scheme for STK 0070II is more complex, there are several components!I'm not an electronics technician, but I want to save this amplifier somehow,thank you in advance!
 

Attachments

  • stk 00X0.jpg
    stk 00X0.jpg
    166 KB · Views: 7
  • stk 00X0II.jpg
    stk 00X0II.jpg
    76.7 KB · Views: 8
Super Noob I just bought a CA880 with a blown channel. The little driver boards connected to the STK0080 aren't really mounted with any fasteners. They just hang off of the legs of the legs of the STK and have a plastic support that just serves as a spacer. They aren't physically connected to the spacer, it just keeps them from shorting to the chasis. What did you do for the driver boards when you switched to the RCS16's STK pack? Did you use solid wire so they had some support similar to stock or did you secure them some other way?
 
I’m getting ready to tackle one of these. Maybe two actually. This is my first time going this deep in terms of refreshing. Sure would be nice if I could find someone selling the bag-o-parts needed to do the job.

I bought the newly made STK080’s.
 
For the power supply and the few diodes you replaced. Where did you get them? I know, its an old thread. Hoping Super Noob hanging around.
 
I’m a novice. I don’t understand where these are so as to be replaced?

“elected to update the the input pair and driver transistors”
 
Super Noob said:
Had an opportunity to pickup a CA-880 unit for reasonable $s since one channel was not working. It utilizes a STK-0080s and is a great candidate for the RCS16 collaboration project pack upgrade. The large studio fisher (sanyo) gear from the early 80s has some impressive transformers and quality involved = but has STK packs which most know will eventual give out. If you have done recaps and restores, I encourage those to consider picking up one of these non-workers.

This thread will document addressing the one shortcoming of this integrated = STK packs.
@rcs16

Lets call this = bullet proofing an under appreciated amp.

giphy.gif


I didn't get a good picture prior to start.... let's use HIFIEngine stock.

fisher_ca-880.jpg


My unit has that sweet anodized black aluminum faceplate & some decent size meters.
Click to expand...
Just curious, is there anyone rebuilding these for a fee (for those of us who cannot tackle it on our own) and if so, what would the cost be to do both channels in one?
 
You must log in or register to reply here.
Back
Top Bottom